Would you fold this hand?

[coolpokername]

Revolution Gaming Network - $0.04 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 3

SB: $2.37
BB: $1.15
Hero (UTG): $3.44
MP: $2.00
CO: $1.20
BTN: $1.98

SB posts SB $0.02, BB posts BB $0.04, MP posts DB $0.04, CO posts DB $0.04

Pre Flop: ($0.14) Hero has 8:diamond: A:spade:

Hero raises to $0.13, MP calls $0.09, fold, fold, fold, fold

Flop: ($0.36, 2 players) K:spade: K:heart: K:club:
Hero bets $0.24, fold

MP shows 4:spade: 4:heart: (Full House, Kings full of Fours)
Hero wins $0.34

.
At first I was shocked he folded the FH, but after thinking about it he might have made a good fold. I easily could of had a K. But if I had flopped a FH, I don't think I COULD have folded!

I won this hand and it has me tilted!!!