Then again, I just had a conversation with H about picking her nose and eating the bounty on her finger. "you must stop that, its gross!" I said, my face convulsing in disgust. "no its not", she says "taste it." Maybe not so big after all.
I had a history teacher in highschool, whose name excapes me, that was obsessed with mucous. All of his jokes were nose picking jokes. In fact, if you pointed out that he was obsessed with nosepicking jokes, he'd say, "that's snot true!" and crack himself up.
So I guess big is relative.