Miroku is much smarter than Inuyasha.
"What do you suppose they are?"
"Who cares?" Inuyasha glowered toward the empty well.
"I /don't care!/" What did it matter if it kept her away?
"You're late, wench! And what are you smiling aa-"
Inuyasha's universe became two simple questions: Why was she kissing him, and what the hell was he supposed to do with his hands?
Kagome pulled back, beaming, "I got a perfect score on my math test!" Then she snatched her pack and ran off.
"Hm," Miroku pierced the very confusing haze, "perhaps you do not care what a 'test' is..."