When you stick two fingers up another persons anus, but you do it every couple of minuets. Since a regular mexican-oil change keeps adding oil, you keep adding your finger.
She was getting clogged up back there, so I gave her the 2 fingered mexican oil change, and now she "runs" clean.
by Kevin Benson December 4, 2007
A man sticks two fingers in a womans butthole and puts it in his butthole then sticks his fingers in her vagina by finishing with both fingers then in his mouth
by Ben and Stephens wacky words April 19, 2017