From a manga "Natural" by Teri Terio:
Last part of the included bonus color comic. Read from right to left: "What you're imagining is coming out of your mouth. Hey, can't you stop fantasizing like that…10 demerit points!" "Eh!? Oh, uh… A demerit point evaluation system, that's unfaiir…" "Shut up, you pervert." "Ah.. Sssorry!"
Interesting manga, in that many of the girls are pissed at their boyfriends or beat the crap out of them at the end of the story, mostly done for comic relief. This approach tends to lighten or make light of their sexual exploitation. Exploitation being things like getting your girlfriend to wear striped underwear or glasses.
Link to a sample story, translated. NSFW, obviously. I'm afraid the site linked to has popups and is annoying to navigate.