Hand converted with online PokerStrategy.com hand converter:
$0.01/$0.02 No-Limit Hold'em (8 handed)
Known players:
[tg]CO (Hero)$5.88:///////;BU$2.58:///////;SB$2.17:///////;BB$2.00:///////;UTG2$1.60:///////;MP1$1.26:///////;MP2$0.88:///////;MP3$2.05:///////;[/tg]
Preflop: Hero is CO with K:h, J:s.
4 folds, Hero raises to $0.08, BU calls $0.08, 2 folds, BB folds.
Flop: ($0.19) A:d, Q:d, 8:d (2 players)
Hero bets $0.14, BU calls $0.14.
Turn: ($0.47) T:s (2 players)
Hero bets $0.33, BU calls $0.33.
River: ($1.13) A:h (2 players)
Hero bets $0.54, BU raises to $2.03(All-In), Hero calls $1.49.
Final Pot: $5.19.
Results follow:
BU shows four of a kind, aces(Ac As).
Hero shows a straight, ace high(Kh Js).
BU wins with four of a kind, aces(Ac As).
Villain is 31/18 over 69 hands.
Is this a dumb call? His line to me looked a lot like some Ax hand. I never put him on the flush as only K :diamond:J 
is likely, any other combo he would want to raise to protect. He could also do this with the nut straight or even a weaker straight (J9) so I figured a call was the only option.
