My sex education came from a friend in school assembly.

LOL,,I used to teach 7th grade sex ed classes,,but they divided the class into boys separated from girls. The boys were boring and idiots: the girls were intense and had REAL life questions....like how big a cock could be when it's hard; would it hurt alot if bigger than 5 inches; WTF is a foreskin; how does a guy keep it hard for so long and where does all that white stuff come from.
They brought in mens fashion mags and took studly guy pages, measured their 'bulge', then use math ratio-proportion calculation to figure out how big his junk probably was under his tight jeans. A very educational experience for them I'd say.,,,,and a whole lot of fun for me each day.