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It is where you cant stop talking and blurting out sayings from the SNL skit "The Barry Gibb Talk Show" which is a great parody of the brothers Barry and Robin Gibb of the Doobie Bros. (aka Jimmy Fallon and Justin Timberlake)
Blurting out "aaaagghhhh" and "Do you have anything to aaaad" in a shreiking voice like Barry Gibb! Out of nowhere I pulled a Gibbisms in the bar when I talked to that chick!
by ryguy6383 March 04, 2009
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The name of the religion for people who have accepted Gibby as their lord and savior.
I just converted to gibbism!
Praise lord Gibby.
by YeetMaster1214 February 22, 2019
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