(NOUN) The art of being a tactless; womanising, geekish, sped.
Did you see that totally hot guy, jenny?
No way...he was a total Gwilliams
by Rebecca April 10, 2008
13 Words related to Gwilliam
The act of kicking someone in the balls with a great amount of strength, often resulting in death.
"Wow, he just totally hit Dennis with a Gwilliam!"
by Grand Master Young February 10, 2009

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