Gibbs-slap
New Word SuggestionDefinition of Gibbs-slap
(noun) a sharp headslap given to the back of the head in an upwards motion, popularized by NCIS character Jethro Gibbs.
Additional Information
https://www.google.co.uk/search?q=gibbs+slap - main evidence (videos etc) Image http://fc03.deviantart.net/fs70/f/2010/166/a/0/Gibbs_head_slap_by_eib29.jpg
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