I want some more opinions on this. It´s the BBs first hand at the table. The replies I got so far ranged from "fold 2 flop raise" over "3betting flop seems not good" to "yea take the flip on flop". There are arguments for each line, but I like folding the least. Board is super wet, we´re BvB and its just so exploitable (probably doesnt matter at these stakes vs unknowns, does it?). B/3b/c is most tags std line here I guess, figuring that we´re flipping more or less, but that´s pretty much the best line we could take from his perspective. In hindsight and thanks to bj I feel like calling the raise and reevaluating turn is my best option, letting me get off the train on suited turns or 8/K or getting it in with way better equity.

$0.25/$0.5 No Limit Holdem
4 players
Converted at weaktight.com

Stacks:
CO ($108.55)
BTN ($25.15)
Hero (SB) ($54.76)
BB ($50.00)

Pre-flop: ($0.75, 4 players) Hero is SB
2 folds, Hero raises to $2, BB calls $1.50

Flop: ($4, 2 players)
Hero bets $3.25, BB raises to $10, Hero raises to $20.75, BB raises to $48, Hero calls $27.25