Jam because if we call, there's only a half pot bet left on the river. If there was more behind I'd like flatting a lot more.

I don't really understand what he has here though. Maybe AQ thinking we rep nothing. Possibly JJJ and we stack anyhow. Maybe a hand like Jx or QQ raising the turn for a cheap showdown on the river. I mean... whatever it is.. I doesn't make sense to me.