my line seem stupid? kq sb

[TWINUNO]

Hasnt seemed like a donk and not agressive, its been only 4 hands and you can see he won all of them.... what is my line... i really think he hit a straight wit that raise
***** Hand History for Game 2701110772 *****
NL Texas Hold'em $10 Buy-in + $1 Entry Fee Trny:15683982 Level:1 Blinds(10/15) - Monday, September 12, 22:11:14 EDT 2005
Table Table 18331 (Real Money)
Seat 4 is the button
Total number of players : 9
Seat 2: TheHunter99 ( $770 )
Seat 3: CarpeFlopum ( $2045 )
Seat 4: cardrack58 ( $770 )
Seat 5: snapdotz ( $785 )
Seat 6: JunkieDaddy ( $800 )
Seat 7: nyerj ( $755 )
Seat 8: MrMagoo7 ( $875 )
Seat 9: hajimeFBS ( $400 )
Seat 10: tm_cruiser ( $800 )
Trny:15683982 Level:1
Blinds(10/15)
** Dealing down cards **
Dealt to snapdotz [ Kd Qc ]
nyerj folds.
MrMagoo7 folds.
hajimeFBS folds.
tm_cruiser folds.
TheHunter99 calls [15].
CarpeFlopum calls [15].
cardrack58 folds.
snapdotz calls [5].
JunkieDaddy checks.
** Dealing Flop ** [ 6s, Qd, 7d ]
snapdotz bets [40].
JunkieDaddy folds.
TheHunter99 folds.
CarpeFlopum calls [40].
** Dealing Turn ** [ 9c ]
snapdotz bets [100].
>You have options at Table 37484 Table!.
CarpeFlopum calls [100].
** Dealing River ** [ 5s ]
snapdotz bets [200].
CarpeFlopum raises [400].
>You have options at Table 37484 Table!.
snapdotz folds.
CarpeFlopum does not show cards.
CarpeFlopum wins 940 chips