also see fuck buddy. Usually this is when its conveint for both parties when they are between significant partners.
by HRM SMK April 6, 2008

by Anonymous September 14, 2003

Similar to a third wheel, but instead of one couple and a single person, there are two couples and a single person. The name comes from the fifth wheel in a car, or the spare tire.
by sven_meister January 1, 2011

"I felt like a right spare dick when I dropped a tennar in the park bin and had to hoke around to get it out."
"Yes you did indeed look like a twat"
"Yes you did indeed look like a twat"
by JammyBambi April 6, 2006

the definition of spare tyre - when the female or male uses the female or male when either are feeling down. ( for example, when the tyres flat on a vehicle, you only use it when you need to ).
or - the person uses one another when he or she only needs or wants something
or - the person uses one another when he or she only needs or wants something
by eshay1na April 16, 2011

by betren June 9, 2011

by Spare cooch lover October 8, 2021
