Gainussing 

To insert the barrel of a firearm into one's anus in an attempt to expand the anus for introduction of foreign objects.

My girlfriend is gainussing so that we can try putting a bowling ball in her anus.

Gainussing by angrysuperhawk January 16, 2017

gaussing

The process of reducing a matrix to its reduced row echelon form by Gaussian elimination.

If a system is underdetermined, there is no point in gaussing it.

gaussing by Carl Friedrich Gauss junior September 4, 2019