Multiway pot, multiway draw, and old women....(live play)

[A_PLUS]

I am going to lie about my stack size b/c I have a thread about an earlier hand going.

Harrah's 175$+25$

3rd orbit, I have been involved in a few big pots. But have shown down well, so image is intact.

Blinds 25/50

UG+12500)(weak passive 30 something guy) limps
MP (2300) (middle age probable degenerate has seen 80% of flops, including an EP raise with J2o)
MP+1 (3000) (old woman, played one hand, and open raised to 500) limps
CO (3500) (angry old woman, makes decisions like it is limit) limps
SB (4500) (Young dude, seems solid)
BB Hero (5000): checks 5 [img]/images/graemlins/spade.gif[/img] 2 [img]/images/graemlins/spade.gif[/img]

Flop (300): 3 [img]/images/graemlins/spade.gif[/img] 6 [img]/images/graemlins/spade.gif[/img] 7 [img]/images/graemlins/heart.gif[/img]

The way the table had been playing, I thought there was a good chance I could draw cheaply here. I check.

Checked to angry old lady, who raises to 500.

Whats my line?