Gruncle

A man dating or married to your aunt who is old enoung to be your grandpa. They tend to fall asleep at the dinner table and drone on about old people crap; Generally disliked by anyone under 40 but favoured with the Aunt's parents because of his old, old age. Can be found at local events which are free because they tend to be broke.

Niece : "OMG mom did you see Auntie Georgette's new boyfriend? Look's like we got a new gruncle!"

Mom: "Yes dear I think he is from the ice age and recently thawed out."

Niece: "I concur."

Mom: "and how!"

by omgitzagrunclecheezeburger May 29, 2009

Gruncle

When you have to take an extremely long and painful dump after eating alot.

Me: After this I'm going to take a nice gruncle.
Friend: So will i.

by The Diego Bleachers August 30, 2016

Gruncle Sam

Somebody who acts gruncley all the time.

Hey did you see Gruncle Sam yesterday he wasn't allowing me to play ram ranch.

by RussianCitizen January 25, 2020

Gruncle Stan

A sexual way a saying daddy

Hey Gruncle Stan ;)

by Juh’Crispy October 19, 2017

Gruncle

The Cousin of another Cousin who ends up pregnant by that' cousins husbands son.

Aye yo, you heard your cousin Craig is having a baby with uncle Tonys daughter right? But ain't that her uncle? Yeah, so now it makes him a gruncle.

by MoreUrban January 11, 2023

Gruncle

An uncle who keeps on gregging.

Damnnnnnn my dads brother acts like suchhhhhh a greg. What a gruncle.

by jeebneeb November 6, 2020

Gruncle

Great-Uncle or Granduncle

The brother of a grandparent.

This is your Gruncle John, your Granddad's brother!

by PetticoatLane October 18, 2019