Villain is loose passive... I think set and 2-pair are possible, but shortstack + all the draws out there = easy call, right?

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
6 players
Converter

Stack sizes:
UTG: $42.55
UTG+1: $267.50
Hero: $122.25
Button: $193.75
SB: $61.10
BB: $26.50

Pre-flop: (6 players) Hero is CO with J J
UTG calls, UTG+1 folds, Hero raises to $5, Button folds, SB calls, BB folds, UTG calls.

Flop: 3 9 T ($16, 3 players)
SB bets $6, UTG folds, Hero raises to $21, SB raises all-in $56.1, Hero calls.