Quote Originally Posted by Rondavu
b) I have 55 TT KK KQ QT or J9 AJ.

Did you know that many hands were ahead of you when you called?
Not to be a jerk, but J9 and AJ aren't ahead here (save for Jc 9c).

That said, it's still sound advice to be weary on the river here. I'd likely cry and call - depending on read. Either that or get some info on the turn, that'd be awful helpful. Probably wouldn't have underbet the river so drastically as well - he was probably just playing at the weakness you showed there...which would be a good trap if you were sure to be ahead.