Jack Frost's finger 

The act of filling up a rubber glove, freezing the water inside it and then fingering oneself with it

Last night I tried out the Jack Frost's finger it felt great

Jack Frost's finger by cookie1113 February 18, 2015

jamie's wet finger

When Jamie sticks her finger into Charlie's butt then continues to pull out his poop with her hooked finger. Then, she licks the poop off and shoves it down Charlie's throat and kisses his belly button.

Wow I totally pulled a Jamie's wet finger last night.
CHARLIE: Ow! My ass! I hate it when you Jamie's wet finger me!

jamie's wet finger by Hubby Bubby Boo November 20, 2016

Mexican 2 finger oil change 

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

Can I give you a Mexican 2 finger oil change. Or would you like me to change your oil

Mexican 2 finger oil change by Ben and Stephens wacky words April 19, 2017

middle finger ring

Are normally promiserings, or collegerings.
It is more comfortable to wear here something sturdy than the other fingers for people who are not used to wear rings.
Some people say it has to do with balance and Saturn.
They are not common for most people wear them on the finger next to it, and you shouldn't assume it has to do something with sexuality.

Girl 1 - My boyfriend gave me a promise ring.
Girl 2- I can see your middle finger ring, it is beautiful! Did you give one to him?
Girl 1- Yes, he is wearing it too in the same finger.

middle finger ring by MissFox2 October 8, 2019

finger banger 

While attempting to fist a sexy coworker you inadvertently
slam your finger against something extremely rigid and firm.

IE: Kate is the biggest finger banger in the office;
She accidently finger banged Ryan while attempting a reach around. see reach around

finger banger by John,April,Katie,Kate&Ryan December 29, 2005

Finger Baby 

When you come on your hand, in which there's a cut on your finger thus resulting in a finger baby.

After Jason's fifth ejaculation of the day, he realized he had a good chance of having a finger baby 9 months later.

Finger Baby by BlakeP July 7, 2008

finger trailed 

To swipe your dirty finger under a person's nose after you used it to finger bang someone

Melissa finger trailed me and yelled "smell your mom!"

finger trailed by money shot February 22, 2005