Same thing happened to me, but I had a good read on the guy so I called his all-in.

6xBB
Me: AQs, Q 10 4 rainbow flop.
He bet: $4
I reraise to: $16
Calls me all in: $30

Calls dude had A J, rivered me w/ a K

I love that.. dont know if that was good play but like I said I had a read on the guy and I knew he was buying the pot (*kinda).