This guy is agro, but his huge aggression frequencies probably because of his cheap-donkbetting style. What should we do on the turn?
Spoiler

NL Holdem $0.25(BB) Replayer
SB ($25)
BB ($27.43)
UTG ($24.26)
Hero ($25.75)
BTN ($24.65)
Dealt to Hero A♣ A♠
UTG calls $0.25, Hero raises to $1, fold, fold, fold, UTG calls $0.75
FLOP ($2.35) K♠ 8♥ 6♦
UTG checks, Hero bets $1.50, UTG calls $1.50
TURN ($5.35) K♠ 8♥ 6♦ J♥
UTG bets $0.25, Hero raises to $4, UTG raises to $7.75 Hero ???