Villain is unknown and haven't been in any pots with him. I am either shipping this flop or folding. Calling is horrible because there are so many cards that kill actions and obviously let him draw to.

$0.10/$0.25 No Limit Holdem
6 Players
Stacks:
UTG ($56.92)
UTG+1 ($25)
CO ($25.35)
BTN ($26)
SB ($36.48)
Hero ($25)
Pre-Flop: ($0.35, 6 players) Hero is BB K♠ K♦
3 folds, BTN raises to $1, SB calls $0.90, Hero raises to $4.25, 1 fold, SB calls $3.25
Flop: J♥ J♠ 9♥ ($9.50, 2 players)
SB bets $3.25, $3.25 to Hero ($20.75)?