Been asleep, say

LAIN

Think of the past participle used when someone has reclined or rested in bed for a while, often paired with "has" or "have."

"Been asleep, say" hints at the past participle of "lie down," which is "lain." The word "say" suggests this is one possible example—you could also use "lain" for resting or reclining. It’s not "laid" (which needs an object) or "lay" (past tense), so the answer fits as the correct form for someone who’s been in a horizontal position.