2/4 nl kk, call the flop overbet?

[fisherman112]

background. the villain in this hand doubled up a min-buyin guy sitting directly on his left in a hand to 160 and the following hand, he opened in the small blind for 30 andtyped in "can you handle this?." the bb recently doubled up player pushed for 168 and villain instacalled with A8o, losing to JJ. i made some snide comment and two hands later got dealt KK in the sb.

5 handed
villain limps utg, button limps, i make it 25 (too small)? bb folds, villain and button call.

432r
i bet 50, villain pushes for 380, button folds, hero ???

those two hands were the only showdowns i saw with him as i have sat down at the table 3 orbits ago.
should i fold and wait for a better spot or is villain showing down 77 or 88 too much for me to fold?