I dont know what it is lately but I cant win, if I flop the nut straight, GUARANTEED: Board Pairs twice and I lose, Flop Top set, and I go down to running straights ...
Anyways, couple of hands from today
Me: 99 in Late Position...
I call an EP raise of about 4x the BB...
Flop: 9 5 J EP raisers overbets the pot; I go all-in, he makes the call... Shows KK, Turn pairs a 5 on the board, and of course River: King...

Second hand, and this one is pretty sick... Me: 10 10, I raise 4xBB in MP, Guy on the button raises about 2.5x my Bet, I make the Call...
Flop: 249 rainbow... I check raise all in, and he makes the call... Donk-o flips AQ offsuit, with no hand, and no draw.... Turn comes 3 River comes 5 and he wins with a straight...

Both calls are acceptable really for the other guy, bad beats yeah but he can't see your cards, and both times he has a great hand and a good shot at the pot PF... and depending on your level you'll get those calls on the flop.