I remember this older kid called Bradley was showing off saying that he would wank twenty times a day. He was only 11 years old.
He also said he came a whole pint in one go. He said he had the milk bottle at home to prove it.
He also said that an erect penis was actually a bone. as in, when you got turned on, this bone would come out of your body and fill up the penis skin. once you were done, it would just slide neatly back into the body.
Both of these 'facts' I believed, btw and certainly passed them off as my experiences in school the next day.
He was weird, that kid.