Jennifer Lopez RADIO REVENGE On Ben Affleck and Diddy

3/11/2014 9:30 AM PDT

Jennifer Lopez let her two most famous exes have it on the radio recently -- HARD -- and it's hilarious.

J.Lo stopped by Big Boy in the Morning in L.A. Friday -- and Big Boy asked her a fantastic question ... if she were floating on a raft in the ocean -- a raft that only fit 2 -- and came across Diddy and Ben Affleck, which one would she save?

We won't give away what she said -- but suffice it to say, Big Boy completely lost it when she answered.