A slaphead is usually a guy who is so naturally bald he makes most bald people look positively hirsuit, but really it can be any guy who is definitely bald or going bald. A slaphead is so obviously bald that you just wish it was acceptable to point out the patently obvious by slapping them 5 or 6 times in rapid succession on their bald shiny head. The term slaphead was actually introduced in the comedy of Benny Hill, a world famous British comedian (deceased). Benny always used a sketch where a small bald man would do something a little annoying to Benny Hill and benny would slap the guy a few times on his bald head.
boy1: What shall I buy my dad for christmas?
boy2: Well your dad's a slaphead so get him some
slaphead polish and a wooly hat
A rhyme sung by errant children to bald guys before running away quickly:
slaphead slaphead over there
what's it like to have no hair
is it hot or is it cold
you would know cuz you're so bald
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