I don't understand the action.

You're in CO and post.
UTG limps, MP raises to $6, you raise to $20, UTG calls, then what?

"MP tanks then pushes" doesn't make any sense.

I'm assuming it was his first hand, thus the posting... And, I have NO idea what tanking meant either, other than "thinking" maybe...

I'm guessing the action goes... UTG limps, MP raises to 6, Hero raises to $20, UTG cold calls... MP pushes allin...

Although I think there's a decent chance he has AA, I'm probably having a hard time folding there... I see LOTS of guys pushing AK and QQ there... As for UTG, since you didn't give any reads, he could have almost ANYTHING... I've seen lots of guys do that with a medium PP, trying to "set it or forget it", even though they're spending WAAAAAAY too much money to get there...

Against an uber-tight MP, I'm CONSIDERING folding there... But I probably wouldn't anyway... And, I think it's FAR from an autofold...

With $20 dead money from UTG, I must push it in. AA is the only thing dominating you. MP may have hands ranging from JJ-AA, AK, AQ. Of course, a read would help.

lol
thx MVP

I had a $240 pot at $100 max a couple weeks ago which I posted on here where I had KK vs QQ and A6s...and the A6s was the BIG aggressor after my BB reraise of the QQ guy...couldn't believe it.