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1.
Slabberdash, the act of holding a penis, erect or unerect, and slapping a member of the same/opposite sex accros the face with it.
i will slabberdash you so hard your eyes water

she could do with a good slabberdashing.
by Andy Gray May 05, 2004
 
2.
a slabber dash is what happens when jamie farts. his buttcheeks ribble together making a noise that sounds exactly like a machine gun firing baked beans.
dude did you hear that?? i guess jamie just slabber dashed again.
by gemrawrrzzz February 01, 2009