I call shenanigans!!

[Maynard]

Calling Shenanigans came from South Park the episode with the running of the cows. The word shenanigan meaning a deceitful trick first appeared around 1855.

My research has come across this as for the actual origin of Shenanigans "The Spanish chanada (a short form of charranada `trick, deceit') is a likely origin. William and Mary Morris (see the bibliography) note that shenanigans could comes from Irish sionnachuighim `I play the fox.' But both the sources mention German dialectic schinageln `to work at hard labor' as a possible origin for shenanigans. Apparently, the implication is `using trickery to avoid hard labor.'"

So SLASH has been moonlighting as Ikea eh?