The process of hitting someone else on the back of their head using the palm of your hand. The person executing the skibap will usually yell 'skibap' before hitting the victim. Sometimes mixed up with the term skibop which is a complete other definition entirely.
Let's go and skibap Joshua and Tommy when their eating. I bet the back of their heads will get a bruise after this one...
by HARD LADSSS April 25, 2018