AA vs. some strange stop and go action

[Jimbobobb]

UTG + 1 is bad. Overvalues his hands like no tomorrow.

BB is just wierd. Only been at the table 2 orbits, and have seen him in 75% of pots. He goes to pretty much every showdown as well. Have yet to see him actually show down a winner. That's all the info I have - no real read, I know.

Party Poker 0.50/1 Hold'em (10 handed)

Preflop: Hero is UTG+2 with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG folds, <font color="CC3333">UTG+1 raises</font>, <font color="CC3333">Hero 3-bets</font>, MP1 folds, MP2 folds, MP3 folds, CO folds, Button folds, SB folds, BB calls, UTG+1 calls.

UTG+1 raises any A or any K preflop. Those are his raising standards.

Flop: (9.50 SB) 7[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="blue">(3 players)</font>
BB checks, <font color="CC3333">UTG+1 bets</font>, <font color="CC3333">Hero raises</font>, BB calls, UTG+1 calls.

UTG + 1's bet means he has a pair. Good for him.

Turn: (7.75 BB) T[img]/images/graemlins/club.gif[/img] <font color="blue">(3 players)</font>
<font color="CC3333">BB bets</font>, <font color="CC3333">UTG+1 raises</font>, <font color="CC3333">Hero 3-bets</font>, BB calls, UTG+1 calls.

huh on BB? Again, UTG + 1's raise doesn't mean much to me.

River: (16.75 BB) 3[img]/images/graemlins/club.gif[/img] <font color="blue">(3 players)</font>
<font color="CC3333">BB bets</font>, UTG+1 calls, Hero......

Well, that brought in a runner runner draw and paired the board. I'm sure I'm ahead of UTG+1, but unknown on BB. Raise against an unknown, or just call and put the info into storage?