Flop overbet

[pzhon]

Villain makes a lot of raises to 3 BB.

On one earlier hand, there was a call and I reraised to 15 BB from the SB, and the Villain folded.

On another earlier hand, I reraised to 11 BB from the SB, Villain pushed for 40 BB with TT and doubled up against my AA.

Online NL, 6-handed. <font color="white"> 1131776263 </font>

Hero is the button, 75 BB.
Villain is MP, 74 BB.
There were no very short stacks at the table, though the SB had only 40 BB.

Preflop:
Fold, Villain raises to 3 BB, fold, Hero calls 3 BB with T[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/club.gif[/img], 2 folds.

Flop (2 players, 7.5 BB): 7[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/heart.gif[/img]
Villain bets 32 BB. Hero...?

Well, I liked the flop, but what did that bet of 4 times the pot mean? I can't think of a hand with which I would do that.