I didn't raise because there were already 2 other players who had called before me, at least one of whom was very tight.
Normally I'd have re-raised or folded, but the player was BB, and also I was busy trying to find out what Call 20 meant, so I just flat called his raise and got lucky on the flop.
Here's the actual hand:
Known players:
[tg]Position_Stack:hands/vp$ip/RaisePreflop/AF/WTS/ORL/BBvsSteal/W$SD;SB$0.98:08/13/0/-/-/-/-/-;BB$2.08:29/10/10/-/33/0/100/0;UTG2$0.98:71/10/4/1.3/0/0/-/-;MP3$2.19:15/40/7/-/0/0/-/-;Hero$1.55:///////;[/tg]
0.01/0.02 No-Limit Hold'em (8 handed)
Hand recorder used for this poker hand: Elephant 0.90 by www.pokerstrategy.com.
Preflop: Hero is BU with 3♦, 3♣
UTG2 calls $0.02, 2 folds, MP3 calls $0.02, CO folds, Hero calls $0.02, SB calls $0.01, BB raises to $0.22, 2 folds, Hero calls $0.18, SB folds.
Flop: ($0.48) 3♥, 3♠, 2♦ (2 players)
BB bets $0.34, Hero calls $0.34.
Turn: ($1.16) K♣ (2 players)
BB checks, Hero bets $0.55, BB raises to $1.52 (All-In), Hero raises to $1.01 (All-In).
River: ($3.69) 4♦ (2 players)
Final Pot: $3.69
Results follow (highlight to see):
Hero shows four-of-a-kind, threes (3d 3c)
BB shows two-pair, aces and threes (As Ac)
Hero wins with four-of-a-kind, threes (3d 3c)