My friend sent me this hand on aim.. sickest bluff ever?

[w33ktight]

What is kentuckyfan8 thinking here?
PokerStars Game #11657223346: Hold'em No Limit ($0.50/$1.00) - 2007/08/23 - 22:39:31 (ET)
Table 'Numerowia' 6-max Seat #1 is the button
Seat 1: Johnny_Felix ($112.90 in chips)
Seat 2: Madrugada 23 ($423.40 in chips)
Seat 3: eyles13 ($91 in chips)
Seat 4: kentuckyfan8 ($100.60 in chips)
Seat 5: chiefsfan17 ($47 in chips)
Seat 6: DonPokerin ($112.30 in chips)
Madrugada 23: posts small blind $0.50
eyles13: posts big blind $1
*** HOLE CARDS ***
Dealt to chiefsfan17 [Qh 5h]
kentuckyfan8: raises $2 to $3
chiefsfan17: raises $7 to $10
DonPokerin: folds
Johnny_Felix: folds
Madrugada 23: folds
eyles13: folds
kentuckyfan8: raises $30 to $40
chiefsfan17: raises $7 to $47 and is all-in
kentuckyfan8: folds
chiefsfan17 collected $81.50 from pot
*** SUMMARY ***
Total pot $81.50 | Rake $0
Seat 1: Johnny_Felix (button) folded before Flop (didn't bet)
Seat 2: Madrugada 23 (small blind) folded before Flop
Seat 3: eyles13 (big blind) folded before Flop
Seat 4: kentuckyfan8 folded before Flop
Seat 5: chiefsfan17 collected ($81.50)
Seat 6: DonPokerin folded before Flop (didn't bet)