Back ons

Underwear that has been worn, discarded and then put on again.

He knew it was a mistake to wear back ons on the day of his wedding.

By the smell of things you're wearing back ons again...

by George Evans June 2, 2008

Back One In

A very significant bowel movement.

Thad: Do not go in the bathroom for the next hour!

Chad: Why broseph? The frat party starts in 30 minutes!

Thad: Trust me! Let it air out!

Chad: But why?

Thad: I had to back one in. And it was a healthy one too!

Chad: Huh?

Thad: You know: Dump some trout, Drop the kids off at the pool, Let one rip.

Chad: OK I gotcha. You could have just sent you took a massive dump.

by ZXY&ABC July 15, 2020

back one out

In reference to defication

I'm going to go back one out

by Anonymous August 20, 2003

Backing one out

The act of going for a shit.

One sec i'm just backing one out

by Dirtmonster May 14, 2009

Back to square one

When you have to do something over again

It is a bad day, you finished your project and the wind blew it away. You're so furious and you've to do it all over again. This is what you called "Back to square one"

by Bryan Chan January 22, 2006

throw one back

means to have an alcohol beverage, to get drunk

After work Im going to throw one back.

by TCR215 December 14, 2008

Back to square one

When you're back to where you started, all progress has been lost

Man, someone shredded my 500 page essay... well now I'm back to square one

by allan_t321 June 5, 2016