Party .5/1, 4AM, with no reads, I am capping the flop and there is no way I fold this river.

EDIT: Though you do say game is loose passive. I don't know you just see so much random junk in these games, and I see people betting/3betting top pair or pair+draw out of blinds into a PFR all the time. My main thing is that I am not concerned at all about overcalling when we are SOOO likely to have MP1 crushed.