I fold preflop on both hands. However, since you called, for the first hand, lead the flop! Against this kind of donk who can't fold KK ever, I suppose it doesn't really make a whole lot of difference, but against a thinking player, I love to lead here. Then when you get raised, it probably chases the third guy out and you can either smooth call or 3-bet, but I like to smooth call more often, and either CR the turn or lead again.

For the 2nd hand, that turn bet is disgusting. You are just inviting villian to raise you with a bet like that. I like 2/3 pot here or check. But especially for the 2nd hand, fold that sh*t preflop.