Zartan as the president doing a Take That! at North Korea:
"The U.S. nuclear arsenal is capable of destroying each of your countries 14 times over. 15, in the case of North Korea, just to be sure." *The North Korean general shrugs in a "What did I do?" manner*
This scene:
Joe Coulton: You alright? Lady Jaye: Yeah. You alright? Joe Coulton: My cholesterol's a little high.
Followed by an utterly unamused eye roll from Jaye, which is amusing in itself.
In the third trailer:
Duke: Drive it like you stole it! Roadblock: As your good friend, you need a new catchphrase.
A lot of stuff that Zartan does while disguised as the President, which includes randomly playing Angry Birds while trying to get the other world leaders to surrender their nukes.
Roadblock: Are you spinning? Duke: Well, you got to cover 360... Roadblock: You're spinning.
Also the shooting contest between the two involving a candlelit cupcake. Duke botches his, Roadblock goes big and eviscerates the pole with a handheld Browning M2 .50 cal machine gun.
In the rec center, Snake Eyes, Jinx and Storm Shadow get into a Mexican Standoff with Block, Jaye and Flint.
Roadblock: [Gun pointed to Snake's head] I think I'm faster than you, Snake Eyes. [Snake Eyes looks down - he has his gun pointed at Block's crotch] Roadblock: Damn ninjas.
Lady Jaye's disguise as a FOX news reporter.
Joe Colton's massivearsenal. Including the code to open up the concealed slide-out armory: 1776.
In the scene featuring nuke launches, the text on the French launch console suffers from a hilarious case of "Blind Idiot" Translation.
POWER (as in, "strength") ARM (as in, the body part) ABORT (as in "end pregnancy") MISSILE LIVE (as in "the missile is a life form")