tandum 

the image created by another object when using the formula hinting to the "eagle eye"

"class, now find the tandum of this box"

"its so easy,just use the tandum!"

tandum by dorsalfinn456 April 8, 2009

tandum stroke 

In a circle jerk, when you use one of your own hands and the hand of the individual next to you.

Me and my bros had a great tandum stroke last night!

tandum stroke by Beartrap, Batman, butt bandit July 11, 2019

Tandem bike 

(N.) A group of women who are on same menstrual cycle.

"After working here for three months, it was only a matter of time before I was added to Mary and Ashley's tandem bike."

Tandem bike by Leon Firestone December 29, 2012

tandump 

The act of one person taking a dump normally on a toilet while another person sits on their lap facing them and takes a dump through the space between the first persons legs.

A tandump can be performed either consensually or by ambush. In an ambush tandump, the assailant initiates a tandump by climbing over a stall wall and dropping down onto the unsuspecting pooper.

Ari: Hey Jacob, wanna take a tandump with me??
Jacob: Yeah of course! I call dibs on bottom!

************
Joe: Mike, why did you and Elaina break up?!?
Mike B: Her ex, Josh, told me that she really enjoyed tandumps, so I decided to surprise her with an ambush tandump! She threw up on me and threatened to call the police...

tandump by AmericanSwagSociety December 9, 2010

Tandem Turd

A turd that reaches both ends of the toilet.

I ate so much McDonald’s that i clogged the toilet with a tandem turd!

Tandem Turd by Pizzasuacc July 26, 2019

Tandem Shitting 

The act of two people taking nasty shits in side by side bathroom stalls at the same time.

Baxter "Did you see those two guys go into the bathroom and drop bombs at the same time"?

Jay "Ya Tandem Shitting is frowned upon".

Tandem Shitting by MadShitter40 January 12, 2012

tandom pooh

A technique in which friends cross arms, and use eachothers weight too lean back, and pooh, when no sign of tiolet is in view. This technique is mainly used in the woods, where the secret cannot be released to society. Group poohs can also take place, if there is more then two friends in desperate need of relaseing a giant alejandro.

"Hey Chris", "Hey Mike" wanna go tandom this one up.

"Guys, I feel like a group pooh is in order".

"Tandom pooh in five"

"Feels like its time for a little tandom action"

tandom pooh by AJAJJAjA May 1, 2006