Too aggressive with no hand and no draw?

[Ghazban]

BB has been at the table for one orbit and hasn't really played a hand. I don't know if he saw me as a raging maniac but I'd raised a couple hands in the past orbit and taken it down either preflop or with a flop bet. Is this a bad time to represent strength without a better read?

Party Poker No-Limit Hold'em, $ BB (9 handed) converter

MP1 ($287.55)
MP2 ($302.15)
MP3 ($97)
Hero ($227.05)
Button ($41)
SB ($209.9)
BB ($212.5)
UTG ($97.9)
UTG+1 ($197)

Preflop: Hero is CO with Q[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $1.
<font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises to $6</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">BB raises to $15</font>, Hero calls $9.

Flop: ($31) 3[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $20</font>, <font color="#CC3333">Hero raises to $65</font>