Road To Epistaxis

So far today I have played 1600 hands. I have maintained focus all the time and am pretty happy so far! One funny hand came up, I end up heads up versus one of the weaker regulars when the table breaks and this is what happens:

$5.00/$10 Limit Hold'em - 3 players

Pre Flop: (1.4 SB) Hero is BB with K J
1 fold, SB raises, Hero 3-bets, SB caps!, Hero calls

Flop: (8 SB) 7 J 5(2 players)
SB bets, Hero raises, SB 3-bets, Hero calls

Turn: (7 BB) 6(2 players)
SB bets, Hero calls

River: (9 BB) 4(2 players)
SB bets, Hero calls

Final Pot: 11 BB
SB shows 3 3
Hero mucks K J
SB wins 10.9 BB
(Rake: $1.00)

Only thing I can come up with is that villain is trying to represent an overpair and want me to fold a TP kind of hand which is never going to happen. If someone else have an explanation of this hand please feel free to enlighten me.

Time to grind some more before going to the movies, Harry Potter tonight. I've always been a sucker for sci-fi and fantasy. Guess it has something to do with escaping reality.