“If this was Sheffield, where The Full Monty came from, a wig war would have been the cue for slapper jokes and baldy scams, but not here.”
“The slapper in some designs is driven by magnetic force, The term exploding foil detonator may refer to either an EB or a slapper-type detonator.”
“It is sufficiently perturbed by this pandemic of kids carrying out surreal stunts on strangers to issue handy hints on how to spot a happy slapper who's about to cuff you one.”
slap
A blow, especially one given with the open hand, or with something broad and flat.
“A sharp slap on his right cheek brought him back to reality.”
“Now, less than a year later, Justin's fate is a slap to anyone who believed that this victory represented an end.”
slapsies
(Britain) A game played by schoolchildren in which a group position themselves in a circle and each place one hand in the centre (normally on top of a table or other item of furniture). An ordinal number or another word such as "last" or "penultimate" is then called out by someone and whoever draws their hand away from the circle at that position has their hand slapped by the other players.
slappy
(skateboarding) A grind on a curb without doing an ollie.
slaps
A two-player reaction game in which opponents slap each other's hands.
