Why do people berate people for calling their bluffs?

[betgo]

PokerStars Game #6142644655: HORSE (Hold'em Limit, $10/$20) - 2006/09/02 - 13:28:29 (ET)
Table 'Khryses' 8-max Seat #4 is the button
Seat 1: ConeyBoy ($442 in chips)
Seat 2: lokemupsally ($7636.50 in chips)
Seat 3: Cantbebawt ($252 in chips)
Seat 4: lipscab ($122 in chips)
Seat 5: betgo ($502 in chips)
Seat 6: farlzz ($798 in chips)
Seat 7: freeroller70 ($760 in chips)
Seat 8: Taximike ($392 in chips)
betgo: posts small blind $5
farlzz: posts big blind $10
*** HOLE CARDS ***
Dealt to betgo [6h Ks]
freeroller70: calls $10
Taximike: raises $10 to $20
ConeyBoy: folds
lokemupsally: folds
Cantbebawt: raises $10 to $30
lipscab: folds
betgo: folds
farlzz: folds
freeroller70: folds
Taximike: calls $10
*** FLOP *** [4s Jd Qd]
Taximike: checks
Cantbebawt: bets $10
Taximike: calls $10
*** TURN *** [4s Jd Qd] [Jh]
freeroller70 said, "no"
Taximike: checks
Cantbebawt: bets $20
Taximike: calls $20
*** RIVER *** [4s Jd Qd Jh] [Kd]
Taximike: checks
Cantbebawt: bets $20
Taximike: calls $20
*** SHOW DOWN ***
Cantbebawt: shows [7s 6s] (a pair of Jacks)
Taximike: shows [8s 8h] (two pair, Jacks and Eights)
freeroller70 said, "qj"
Taximike collected $182 from pot
*** SUMMARY ***
Total pot $185 | Rake $3
Board [4s Jd Qd Jh Kd]
Seat 1: ConeyBoy folded before Flop (didn't bet)
Seat 2: lokemupsally folded before Flop (didn't bet)
Seat 3: Cantbebawt showed [7s 6s] and lost with a pair of Jacks
Seat 4: lipscab (button) folded before Flop (didn't bet)
Seat 5: betgo (small blind) folded before Flop
Seat 6: farlzz (big blind) folded before Flop
Seat 7: freeroller70 folded before Flop
Seat 8: Taximike showed [8s 8h] and won ($182) with two pair, Jacks and Eights

Cantbebawt said, "unreal"
Cantbebawt said, "calling me down with 88"
Cantbebawt said, "I raise pre flop and you do not figure me for one paint?"
Cantbebawt said, "lol"
Taximike said, "sorry bad beat that 67 didn't get out on 88"
Cantbebawt said, "you understand me"