He just kinda falls asleep like that

Denial ain't just a river in Egypt, honey

Ever know someone who just cannot lay down and stay awake?  Those people are borderline narcoleptic.  Or a light case of narcolepsy.  Something like that. 

Sometimes they'll be holding a remote facing the tv but then you hear the snore and realize they're sleeping.  So you shake them.

"What?"

"You were sleeping."

"No I wasn't."

"Oh?  Were you just snoring for fun?"

"I wasn't snoring."

"You just didn't hear it, because YOU WERE SLEEPING."

"Whatever dude."

And snoring will again commence approximately 32-57 seconds later.