Gilliganism 

To define something in its simplest terms after something is explained in a complex form, making the simple person look like a dumbass since everyone understood it the first time.

Origin - Gilligan from Gilligan's Island. He always did this when the Professor explained why something did or did not work

Classic Gilliganism:

Professor: "In order to make this new coconut-based radio function properly, we need an new receiving antenna installed on top of that coconut tree by the lagoon. In order to properly support it, someone will have to be ambidextrous."

Gilligan: "Yeah, and they have to use both hands,too."

Gilliganism by Dr. Freeze July 4, 2009

Huge Gilligans 

Big ass titties.

Yo son, that bitch had some huge gilligans!

Huge Gilligans by The Verdicts May 21, 2009

Gilligans Island Original 

Unrolling an entire roll of toilet paper putting it inside the toilet and you take a shit on top of the paper.

I went into taco bell and left a gilligans island original in the mens room.

Gilligans Island Original by insert new name here September 12, 2011