Flat Donk?
Hard for him to have anything to call a raise with but IMO DB's tend to indicate draws, so i figured he might call anyway, and I am raising for value and protection.
Or, Since it is a 3bet pot is he less likely to have draws in his range. Villain was an unknown.
Full Tilt - $0.25 NL - Holdem - 9 players
Hand converted by PokerTracker 3
BTN: $27.40
SB: $27.79
BB: $7.60
UTG: $16.25
UTG+1: $25.00
MP: $8.40
MP+1: $25.35
Hero (LP): $25.25
CO: $6.30
SB posts SB $0.10, BB posts BB $0.25
Pre Flop: ($0.35) Hero has K♠ K♦
UTG calls $0.25, fold, fold, fold, Hero raises to $1.25, fold, fold, fold, fold, UTG calls $1.00
Flop: ($2.85, 2 players) 4♥ 3♠ K♥
UTG bets $0.75, Hero raises to $2.25, fold
Hero wins $4.14