Hero in second seat raises 5bbs with pocket KKs. Only BB calls. Flop is 357 suited. Hero bets 10bbs. Hero bets another 10bbs and villain raises 25 bbs-all in. Call or fold here when villain style unknown? Is this a bluff repping trips or maybe a straight?
You've already committed 25bb and there's only 15bb left to call. KK is too strong of a hand to fold here because there's still a decent chance you're ahead.
In my opinion, you should call here. Too many hands in villains range that are behind to fold for capped 15bb into 65bb pot. Pot odds are just too good to fold here.