A sexual favour performed with the use of a finger/fingers.

Most used in the greater Belfast area.
Go ahead Franky , slip le han le fuk.

Did ye slip le han?
by GMcC December 16, 2004
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An oft-said expression, mostly spotted on Twitter or Tumblr, uttered when one has posted a drawing online that is in some way peculiar, inappropriate, or unexpected. Synonymous to "Someone take Photoshop/GIMP away from me".
*posts tweet with fanart based on a stupid pun* "oops my hand slipped"
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Slipping hands into each others underwear
Friend: so what did yous do last night?
Me: we slipped hands.
by Spicy bitch May 3, 2016
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