what the christ kind of weak play is this

this guy has done this several times, after first table coaching (so he seemed to have a basic grasp of the game, OR SO I THOUGHT).

***** Hand History for Game 3226103789 *****
$0.50/$1 Texas Hold'em - Monday, December 19, 00:47:57 EDT 2005
Table Table 65132 (6 max) (Real Money)
Seat 4 is the button
Total number of players : 5
Seat 1: TheShoShoSho ( $117.50 )
Seat 3: heret1k ( $51.75 )
Seat 4: Flapperdefla ( $7.75 )
Seat 5: MRGMONEY111 ( $25 )
Seat 6: Mac51161 ( $53.89 )
Mac51161 posts small blind [$0.25].
TheShoShoSho posts big blind [$0.50].
** Dealing down cards **
Dealt to heret1k [ Ks Qd ]
heret1k raises [$1].
Flapperdefla folds.
Mac51161 folds.
TheShoShoSho calls [$0.50].
** Dealing Flop ** [ 5c, 2d, Kh ]
TheShoShoSho folds.
heret1k does not show cards.
heret1k wins $2.25

i forgot to c/p the chatlog, but i asked why he did that, and he said something like:

"well there was a king on the flop, so i was probably beaten. why risk going any further at this point."

i'm like "yeah but it's free" and that i might check through even, etc.

then he just repeats himself and says "why don't you just be happy you won the pot."

at first i thought he had some technical error with his mouse or something but honestly, what the christ.