What's some stupid things you've done as an LT or seen LTs do?

FTX when I was a 2LT, convinced a 1LT to interrupt a staff meeting to ask our BN XO for a box of grad squares. Told him I was starting lanes training in 15 minutes and I needed them and that MAJ ABC knew where they were. So he busts into the BN CO's tent to ask for them. Couple of minutes later we get a call over the radio that the old man wanted to see me. He tried to chew me out over it but couldn't manage to keep a straight face. Told me not to do it again. This same 1LT wore his ACH backwards for the entire day during that same FTX. He also lost his convoy after the OPFOR ambushed the second vehicle and he didn't notice and kept on driving.

Had a INF Lt assigned to my Stryker MGS platoon. By the end of the first month I had him convinced that playing The computer game steel beast was appropriate for Sergeant time training is long as I had the privates gathered around the monitor and giving fire commands. First sergeant wasn't happy but he did laugh a little over it

Saw a Cadet shaking a tree so my Sgt could find us on the map once.

We all joked about it later. He took it as rights of passage. Good Cadet. Locke was his name. Always remember the good guys names.

In Panama our BN Mortar PLT was conducting a Live Fire exercise. They went through the process of a Reverse Registration but the 2LT forgot to ensure the Tubes were turned back. He dropped the first live round in the Panama Canal missing a freighter by about 2 minutes; he was reassigned to the Motor Pool that afternoon!

The stereotypical lieutenant is, of course, bad at land nav. I was taking MS classes as a prior service SPC in college, and was assigned a "mentor" senior cadet to "teach" me land nav. Between start and first way point, he lost the map. Fortunately, we had the xeroxed pages with the points, and I'd shown off a bit by doing calculations on distances & azimuth before we started, so we managed to find all the points.
Ran into him as a CPT a number of years later while picking up ammo for a NG range. He was not thrilled when, in recollecting, I mentioned the incident.

PL at Polk. On a mounted movement to contact (Company level), LT had the shits, refused to just pull over and take care of business because he thought the CO would get mad. Shit himself in the 113. Had it running out of his bloused pants into the PC. He was forever known as 2LT "Dirty Harry" Callahan from that point forward.

Yes, we had an airplane on jacks and I told the guys I bet this dude?? will ask a dumb Question. Sure enough, he asked me if the aircraft was ready to fly. I said "yes sir, all you need to do is add power". The crew laughed.

Ask if they had to salute a 1LT.

Our LT was getting chewed out by our CO over the phone. He would hold the reciever away from his face and jump up and down and curse under his breath, then would stop to listen to the CO. I've never seen a grown man throw a temper tantrum before then.

I was in Combat Support Ops, Nam Phong, Thailand (The Rose Garden), and my job was a Tech Controller, part of a net for all comms in SE Asia. We worked our shifts alone in a small plywood hooch surrounded by concertina wire, often 12 on 12 off 7 days a week. Now conditions there were verging on primitive- our equipment was actually Korean War vintage. The mud was probably from the Revolution though, since the Corps has always just recycled that. So not even a latch on the door. Enter our new One Zero, "Captain Crunch" (new Comm O, our nickname for him- straight out of 8th & I; literally). He gave up on trying to get us to keep our boots spit shined there in the middle of the jungle and focused instead on trying to catch us sleeping or otherwise doing wrong. And he especially wanted to catch us screwing up, or off (anything would do) because every time we pulled the plug on the CG (interrupting him was one of my less onerous duties), he took the brunt of the Old Man's ire. We also got a brand new butter bar who followed Crunch around like a puppy dog, just as close on his heels as he could. Crunch and pooch used to just barge into the Net Controller hooch, head on a swivel, piggy little eyes searching for anything wrong; his wide eyed puppy so close if they hadn't been in step they'd have tangled and fell in a heap!

Then they "gave" us crypto. And at the same time we were installing the crypto machine they were upgrading security, including a latch for the door and instructions to keep it latched at all times. Now, I don't know if no one told Crunch, or if he just forgot. But about 11:00 he came flying up the 2 steps to our door and hit it as he always did; only this time it hit back! There was a terrific crash and all would have probably been ok for Captain our Captain, but the Pup then ran into him! There was a second crash as Crunch hit the door again (and again it hit back), and now they were out of step! Legs tangled, they went over the side on the steps, right into some of that recycled mud!

After that we noticed the Lt. did not follow the Cpt quite so closely.