When a normal and/or serious coversation or message board thread becomes overrun and distorted by silliness and general tomfoolery.
by Dave March 28, 2005

"Officer Barbrady, I call shenanigans!"
by J W Fokker October 17, 2003

by zBurd October 18, 2009

Used as an interjection, "Shenanigans!" denotes a person or event suspect of unscrupulous or dishonest conduct. If one believes they bear witness to such an occurrence, they should immediately call "shenanigans!" to draw attention to it.
by TheLastMuse August 10, 2008

one who performs shenanigans
by CaseyRocksYourFaceOff September 16, 2008

by hswbdiuw January 11, 2009

One who partakes in the planning, and pulling off of shenanigans
Someone who engages in frequent shenanigans, a portmanteau of "shenanigan" and "engineer"
Someone who engages in frequent shenanigans, a portmanteau of "shenanigan" and "engineer"
John supplied the idea of filling the water balloon with yet another water balloon. He also supplied the balloons and the water, he was the head shenaniganeer of the entire thing, you could say.
by Jackson "Nuke Puncher" Telling August 1, 2013
