Villain is a 16/4 - I'm not even sure how to call this. He has previously called my UTG raise with 23s from the BB and played it passiveley. The very last hand on another table I stacked him in a huge cooler situation where I sucked out with a 4% equity. He was very tilted and left the table.

I raise 88 UTG, he calls in BB.
Flop 245 two tone, he donks pot I call.
Turn 6 completing the flush, check check (I have the color).
River is a 7. He donks pot.

So effectively I have the nuts here and he is on a monkey tilt. But we have a whole stack behind, so a shove is an overbet.

Good spot to overbet.

Who's a nut? You? Oh you have the nutz. With a straight flush I raise.

16/4 is setminer FWIW

I shove.

I shove.