Addition by subtraction 

When one person in the group leaves and the group as a whole becomes better

Kyle- "Finally Jimmy left"
Leo- "Jimmy was so ugly and drunk. Now all the ladies will come to us"
Steve- "Yeah, it's definitely addition by subtraction"

Addition by subtraction by Skeet Master Steve June 21, 2009

subtracting an F 

When you subtract an F,he goes from being your Best Friend Forever to being your BoyFriend.

BFF-F=BF

I've been thinking about subtracting an F with eddie for a long time, but I don't want to ruin our friendship.

subtracting an F by Coralynn June 4, 2007

subtraction gardening 

Letting all of the weeds grow in your backyard and then pulling out the ones that don't make pretty flowers.

neighbor: Hey your yard looks great, but aren't those the same weeds that are in every abandoned back lot here in Detroit?
me: yep. It's called subtraction gardening.

subtraction gardening by nageuse July 22, 2012

Subtraction Rule 

If you'd calculate for example 3 x 3 it would be 8 instead of 9 because of the fact that you subtract one from the original answer.

Smegma är efterbliven aka Subtraction Rule

Subtraction Rule by Inte Jesper April 6, 2022

subtracticon 

That feeling when your team at work put their fingers together and unite.

Subtracticons, unite!

subtracticon by Ferdi da August 19, 2022

The subtraction 

Also referred to as "Teh Subtraction"<br>The person of your desire's/The addition's current significant other. Called the subtraction because you think they have a negative impact on your life, not to mention they are totally wrong for your love interest.

Mandi: "OMG The subtraction should die."<br>Me: "I know."

The subtraction by Heather (Ya Know) December 26, 2007

subtractionbound 

minimising effects of group areas act

No kidding subtractionbound is around all round.

subtractionbound by Hercolena Oliver April 28, 2008