Weird switch...

So I had been playing on the main game at Deerfoot for a few hours, I was up a lot since I had been hitting all my big hands and I hadn't been getting put in any really tough spots by the other players.

So I'm about wrap up since I'll have to go to work and I pick up 77 UTG on the final hand I'm going to play. Button straddle is on (seat ten), a friend of mine limps in the SB, and before I act the player in seat five limps (I'm in seat three). He then realizes he's acted prematurely then I raise to $40... And without much further thought he calls my raise. I immediately call him out for such a suspect line of just calling my oddly large 8x raise after already trying to limp, he acknowledges my dialogue though he doesn't reply. My friend also calls and we're three ways to the flop...

443hh

Check-check to Mr pre-limp/re-limp and he bets $40 which seems like about the most peculiar bet I can think of considering I think the vast majority of the time he's trying to set-mine. SB folds, I run things over again my head and rule out all the really premium pairs and suited AK/AQ because everything I've seen from him over the last few hours would have him wait his turn and raise, not just pre-limp/re-limp. I'd measure this guy as a slightly winning player, and I've not seen him really get out of line at all so 22 and 55 through 99 are really the only hands he's got here on the regular... But if he believes he's winning WTF is with the 1/3rd pot bet? My conclusion is that he's information betting, so I want to give him a reason to fold. I raise to $160 total. I'm expecting him to fold almost all the time here, and to ship his stack in the rest of the time... And he just calls!?

4433hhcc

This hand is super weird. $450~ in the pot and he's got just under $300 in his stack (vs my $1150). I figure he believes himself committed at this point so I need to just shut down and swallow the $200 investment I've put into this one. I check so that it's up to him to not screw up the hand. He then bets $100... There's no way he's dumb enough to bet a full house or quads in position on the flop and then again on the turn, but how is he just being so small again?

"Do you want to play show one?"
"Maybe if you fold."
"That's not playing show one."

I give it another few seconds and then muck my cards. He says something I don't precisely recall regarding showing and I respond "show both or don't show either, I don't really care either way the hand is yours". He shows Q10hh, then says something about if he's wrong he just takes his $160 and goes home, and only playing poker a few times a year. As far as I can tell a switch in his head must have just gotten flipped when I raised his pre-limp "fuck it, this hand I'm going to beat the pro".

My friend says that with the same line if I ship out right away on the turn he can't call (though I'm guessing he would have anyhow just to gamble), but she had only been at the table for an orbit or two and wasn't giving him the credit I was for as of yet never having gotten out of line.