No-nonsense Jack Byrnes (Robert De Niro) decides it's high time he sorted out a successor for when he eventually croaks it, which of course means bumbling son-in-law Greg (Ben Stiller) wants a shot at the title. Hilarity ensues.
Except, no, it doesn't.
Greg has to inject Jack's penis.
We can't remember why, but yes, this actually happens. We're surprised De Niro didn't tell the writers of this sequel to Fock off.