"Let's go. We only have sixteen hours before they wake up."
As hilarious as Kirk Lazarus is, the film's Crowning Funny Moment comes near the end of the final action scene: Tugg, escaping from the drug cartel with a toddler he tried to adopt hanging off his back repeatedly stabbing him with a knife, finally gets fed up and throws the toddler off the bridge into the river, emphasized by the fantastic mid-air cartwheels he sent the kid into. The kid, amazingly enough, survives, too, and looks none the worse for wear (merely extremely pouty) so you don't even have to feel bad about the horrific child abuse!
Kirk Lazarus as Lincoln Osiris as a Peasant Farmer showing Tran exactly where his farm is.
Kevin: Ohhh..Wow I love Jelly Beans, can I have..?
Jeff: NO, YOU CAN'T HAVE ANY FUCKING JELLY BEANS!! They're mine. You think you're the only one who gets sick when he doesn't have his Jelly Beans? Boundaries, man, fuck.
"They're not jelly beans."
"Yo, asshole, this motherfucker's dead!"
Robert Downey, Jr.'s in-character DVD commentary is priceless. ("Remember when you told [Brandon Jackson] to slap me all goddamn day, Ben? I remember. Like it was fuckin' yesterday.") He even switches to an Australian accent when Kirk has an identity crisis and realizes he is not any of his characters.
From the Rain of Madness documentary: Kirk is informed that his mother has passed away, and he's talking about his mom when Cockburn comes up behind him and generally starts goofing off. Cockburn finally goes too far and puts his hands on Kirk's neck, causing Kirk to jump up and grab Cockburn before proceeding to punch him, make him sit down in his chair and say goodbye to his (Kirk's) mother. Take note that Kirk is still in-character as Lincoln Osiris while this is happening.