Slap and tickle is a British expression that is defined as sexual play.
Playful kissing is an example of slap and tickle.
See slap and tickle in Webster's New World College Dictionary
noun
Browse entries near slap and tickle
slank
slant rhyme
slantways
slantwise
slant
slap-bang
slap-happy
slap shot
slap-up
slapdash