Thought this was a very tough hand and wanted some discussion...

Button and SB are both very Lag, borderline maniacs.
.5/1 (6max) at Party

Preflop: Hero is in BB with 65d
4 limpers, Sb raises, hero calls, button raises, 5 calls.

limp/3bet by button means very little to me, probably just bored.

Flop: 6s, 7c, Jd (18sb)
Sb bets, Hero raises,2 folds, CO and Button cold-call, Sb calls.

On the flop calling,raising and folding all entered my mind. After some thought I decided to raise, not sure about it though.

Turn: (15bb) 9d
Sb donk-bets, Hero raises, Co folds, button cold calls, sb calls

Picked up a bad gutshot and flush draw to go with my 6. Raised to fold out a 10 or by some miracle a J. Sb now has me confused as hell with his action.

River 8c (21)
Sb checks, Hero checks, Button checks.

Assuming the check was good.

Ugh I hate your flop raise. I have no problem with defending against a SB raise. Gotta call the threebet blah blah blah, preflop is easy

Anywho...I don't get what you are trying to do with it. I guess you're trying to force cold calls...but they were gonna call anyway, and you don't have much equity with bottom pair.

I do like the turn raise with the outs you picked up. This seems like a better spot to be aggressive

Bet. The. River. You have a straight, and you can't be checking fearing a 10