100bb stop n go...what do u call with?

This is sorta a hypothetical, but what is the worst hand you call with on the flop facing this weird stop n go line?

2/4
$400 stacks

SB is 24/18, seems pretty good and aggressive pre flop.
so far this session he's folded a lot to late position raises, so maybe a higher chance he 3bet light.

Hero is 22/19, and very aggressive pre flop, usually 4betting AQ+/JJ+ but sometimes like T9s/Axs.

Pre Flop:
3 folds, Hero (BTN) rasies to $14, SB reraises to $48, BB folds, Hero 4bets to $150, SB calls

Flop: K 9 4

SB gos all in for $250. Hero...

a hand that has AA beat

I don't get small blinds line at all and really don't expect this to be KK or AA.
Even so, we can't expect opp to show up with something bad given the image and reads and flow of session. If it's been threebet every other hand/fourbet war than I'd look this up really light, maybe any pair 9's or better.

Here I'm betting opp has AK 85% of the time so we should definetely fold without AA, KK, or AK.

How could the SB have anything good?

Originally Posted by Massimo

How could the SB have anything good?

this is what ive started to think...logic being if he has a good hand pre flop he should push it there, and post flop, you expect c/r with the goods?

but if it actually reps a bluff and will make ppl call real lightly post flop when they might fold pre (is btn calling a push with pre flop with A4s? JTs?), maybe doing it first with a big pair is good?

i can't decide if this is a good line with any sort of hand, if some only call with AK+ and others will be like "wtf is this?" and call with like T9.