How would you react to an E2 who "smart mouths" you in formation?

Rip his dick right off

Run this turd into the dirt until his asshole bleeds!

I would ask the other E-2s "who will volunteer to do this guy's work." I would assume nobody would step forward and then tell the mutt that he has no friends willing to do the work for him so he has to do it. Nothing like peer pressure to fix a problem.

I'm with Gunny Pepper on this one. This shit needs to be nipped IMMEDIATELY. (Of course, in an ideal world I agree with praise in public, punish in private. But I've seen this very thing happen in one of my own units and so I guess I'm bringing that previous experience into it. Besides, rare is the case when a non-previous offender will inherit a family crisis and all of a sudden go brain-dead and insubordinate straight out of the blue.) Calling PFC Shitbird's next-line supervisor in on it makes not only the PFC accountable for his actions, but also makes others in his own chain miserable and vulnerable and most of them sure as hell don't want this B.S. repeated. (Perhaps it might eventually also generate the time-tested peer-punishment "blanket party" which also has its merits.) Granted, authoritarian discipline doesn't work in all cases, nor does it work for many folks beyond that "10-day compliance" window we're all pre-wired for. But this is the U.S. Military, is it not? How often have you seen Boot-level, T.I.-dispensed, in-your-face motivation fail to achieve its desired goal? Has the military changed so drastically since my days in uniform? Has it all become soft-handed, stress-card, and pussified? All effective NCOs should master the art of improvising, adapting and overcoming. There is a wide variety of ways to effectively implant a heavy-soled foot-covering into the effective posterior point-of-contact to achieve the desired level of motivation.

Sure, we NCOs can't bust so many asses any more but we sure as hell can still take names. Fear DOES generate respect until the individual gets motivated enough to self-generate same. Punishment likewise generates that requisite respect (even if they hate your guts), IF doled out properly and PUBLICLY so EVERYONE in his unit (and ESPECIALLY his cronies and allies that might later try to back him up) have ZERO DOUBT why PFC Shitbird is cleaning latrines with his toothbrush or shoveling shit or digging graves for mosquitoes or filling sand-bags or whatever else you select as the best training method. There's no shame like public shame. If that still doesn't work there are always incrementally more serious options, higher-order discipline, "failure to go" paperwork, Article 15s, a visit to the next line of supervision to get fitted for an even larger boot up his ass, and finally reporting to the CO for his pre-court-martial briefing.

I would smoke them till they find the meaning of following orders.

Put him on latrine duty....

Drop and give me 20 push-ups and your doing the guys next too you duty also.

Pull him out of formation and deal with it in private.

Push-ups and running until he pukes

Lots of extra duty, late night hard core PT and back to E1

say he can accept the assignment or the punishment. choice. Issue standard protocol for insubordination.

I would smoke-check that E-2 like he should be. Disrespect too a senior NCO will not be tolerated by no means at all.

Suspend pay restricted to post 100 push ups

Take little sh_t out behind the whiskey locker

Full tounge lashing PT EXTRA Duty Latrine Duty

Shut him down while in formation put him in the front leaning rest position. After formation grab another NCO and address the issue.

Beat him until he shits, then beat him for shitting

Take a big old dump on him. Show respect and keep your bearing specially in formation. You cannot allow one to do that in front of others. He rises up in front of others he gets checked in front of others

Tell him and his supervisor to stand fast and have everyone else fall out. Rip them both a new ass and ask the supervisor later what the hell is going on with junior GI.

I would say "Ok, fine. I will find someone else to do that task". I would then find the worst possible job available to assign to this young Sailor. I would then explain to him the error of his ways while PTing him until he puked. Only at that point would I know his lesson had been learned.
Any Command that would not support and expect this type of discipline from its NCO's has a leader that should be immediately removed from the military before they weaken it further.