Handsy the Invisible Man 

Phrase used to describe your friend or buddy that gets very touchy-feely when drunk.

Watch out for Handsy the Invisible Man after 4 Kettle One and Tonic's...he has 8 arms and will probably feel up your wife or grab some girl's tits along the way...

Handsy the Invisible Man by B. Hanback January 17, 2009

Playing the Invisible banjo 

Female masturbation, from the action of the hand as if strumming a banjo

Barbara's boyfriend couldn't make it that night, and with her being horny, she had to resort to playing the invisible banjo.

Playing the Invisible banjo by darfieldboy June 8, 2011

Masturbating with the Invisible Hand 

When a person becomes sexually excited while discussing economics, especially Adam Smith's traditional economic theory of the invisible hand.

When Cody passionately rambled on about economics, his friends told him to quit masturbating with the invisible hand and learn how to play sports.

Masturbating with the Invisible Hand by goldman or bust May 8, 2010

Giant Invisible Flying Penis 

Obviously a large penis. It is unknown as to which race of human this genitalia is. It also houses some power that makes it fly. As well as flying, it also makes itself invisible. Using this power, one can be the ultimate sex icon.

" I Tried to take a whiz, but my penis magically detatched it self from my crotchal region and flew away. It turned invisible and grew in size quite dramatically. I knew It to be as The Giant Invisible Flying Penis. "

Giant Invisible Flying Penis by Ilike ponies January 12, 2012

more invisible than a black man in a car with tinted windows at 3AM 

something that is pretty damn invisible!

Student: Here's my assignment. I know it looks like a blank page, but I wrote it in invisible ink.
Teacher: Damn! It's more invisible than a black man in a car with tinted windows at 3AM! I wish I could give you an A+, but I can't mark it. You fail.

more invisible than a black man in a car with tinted windows at 3AM by UrbanPrick April 13, 2011

The invisible hand 

A masturbation technique of sitting on your hand until it is numb, so that it feels like it is someone else.

I tried the invisible hand last night, but it didn't work for me

The invisible hand by Redsword1996 May 3, 2015

The Invisible Closet 

When everyone know's a guy is gay, but he refuses to come out of the closet.

Jeff: Oh my God, Becca, your shoes are sooo fabulous!!!
Rebecca: JEFF! Come out of the invisible closet already!

The Invisible Closet by Creative@College April 11, 2010