The act of fisting someone with both fists through the vagina and asshole and giving yourself a fistbump during the process.
John: Hey Georgia, later you and me going to do a little double fistception later?
Georgia: I can't, I had Taco Bell earlier. Maybe some other time when I don't have the runs.
Georgia: I can't, I had Taco Bell earlier. Maybe some other time when I don't have the runs.
by Allybama July 28, 2017

Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and four great-great-great-grandparents in common.
Double-fourth-cousin.
by Cerejini May 21, 2024

by double chonker September 30, 2022

Jerry: Man i really fucked up
Jack: how so?
Jerry: i got double fried because i forgot to bring sunscreen again
Jack: how so?
Jerry: i got double fried because i forgot to bring sunscreen again
by Kitten_Pop June 12, 2021

Child of a paternal grandmother with maternal grandfather, in other words, maternal half-sibling of one's father and paternal half-sibling of one's mother at the same time or also is the child of a maternal grandmother with paternal grandfather, in other words, paternal half-sibling of one's father and maternal half-sibling of one's mother at the same time.
My double-half-pibling is a good person.
by Hgcloziw November 23, 2019

The act of attaining an erection while sitting on the toilet and then terrifyingly unwedging it out from under the toilet seat. This process typically involves skill or else we get our definition.
John: "yo I took a fat shit yesterday but can't have sex tonight cause I accidentally gave myself a 'double circumcision' "
Joe: "oh my god man why didn't you tell me"
Joe: "oh my god man why didn't you tell me"
by S. Millows June 2, 2020

by Mcdoubledaved! September 23, 2023
