Plant two trees with one seed 

Getting two things done at once.

We are planning a trip to California this summer, while we are there we are going to visit my parents. This way we can

'plant two trees with one seed'.

Plant two trees with one seed by 1 Love July 11, 2010

one pant leg rolled up 

A trend either worn by: a- celebrities such as LL Cool J back in the early 90's or Eminem, b- the thug or gangsterish crowd, c- people who ride bikes.

Situation: Adam had "one pant leg rolled up" accidentally. Melissa gives him an awkward look. He says, "Yes I'm gangsta!" She replies, "You know who else wears their pants that way?... People who ride bikes!"
Hysterical.

one pant leg rolled up by missliss April 15, 2008

Putting all of your Poles in one plane

Like "putting all your eggs in one basket", but referring to when all of the Polish Royalty crashed in the plane accident.
To risk losing everything by putting all your efforts or all your money into one plan or one course of action.

"Man! I just lost all my money on one roulette roll!"

Wow, you were really putting all of your Poles in one plane on that one.

Putting all of your Poles in one plane by CoOpmeister June 23, 2010

one pant 

one leg of pants, a singular pant that can be noted as "one pant"

Hey, look at that girl!

I know! She's so trendy with her one pant!

one pant by darealgurl15 April 2, 2011

Plan B One-Step 

emergency contraception you take within 72 hours after unprotected sex.

And when you do, there’s Plan B One-Step—the #1 OB/GYN recommended emergency contraception brand.

Plan B One-Step by SPrice1980 May 24, 2023

Plan B One-Step 

emergency contraception you take within 72 hours after unprotected sex. The sooner you take it, the better it works.

Shop for Plan B One-Step your way: on‑shelf in the family planning aisle or buy online and pick up in‑store or curbside. No ID, no Rx required.

Plan B One-Step by SPrice1980 May 24, 2023

one man floor plan 

A public restroom with only one toilet.

I hate this bar because you always have to wait in line for the bathroom. That's the major disadvantage of a one man floor plan.

one man floor plan by xenosapien September 12, 2013