Hero goes to nearest wall and bangs head against it! Nah idk how wide these guys are 4betting, but at least know we shouldn't expect much fold equity, and we kinda want some of that when we're jamming JJ in this spot. Think it's a close spot so we can jam or fold at some frequency each, but prob leaning towards a fold in this one with the info you've given, that he doesn't fold much to 3bets but never has 3b or 4b this far.

Hi archinator, vs whales without position i prefer call with JJ/TT- because these villain like bet 3barrels with 2nd pair or TP then when we have OP is easy stack vs them and when board show any A-Q-K(whale love this cards) then i can control pot

GL!

Yeah it's fine as they can be doing this with a wider range too given dynamic. Not really loving it if they've never 3bet before though.

How have they been playing post flop, are they aggressive (raising/leading) or passive (calling)? If it's the latter then I'd fold to their 4bet, if it's the former I'd get the stacks in.

Lot of fish like this play super passive until they get the nuts.

call me fish but I can never turn down a flip vs recs . As u have 100bb then for me it is easy shove.

By default I fold to their first "play back", also, I think flatting JJ oop @ BB is a better choice.

Yeah with him not having played back at you until this and if he is usually passive I would just let this hand go, we're probably flipping or dominated and we probably have no fold equity against a fish 4bet so I don't like a 5bet that much either.