Jack King Koff

The name you give yourself when you see that your penis is at least 8 inches long.

Hey man, my dick is 8 inches long, so just call me "Jack King Koff"

by DallasFanFTW June 7, 2017

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Slack jacking

When someone takes over a thread on the Slack messaging app for their own purpose

I was talking to Mark in the update channel in Slack and the entire sales team decided slack jacking would be a good idea to discuss how to sell it.

by FRITGuru September 24, 2025

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jack out the weasel

When you beat your meat or somebody else beats it for you. Jerkin the gerkin.

She said she would jack out the weasel and then we would watch Futurama.

by senior jota April 10, 2023

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Jacked up

Used commonly in bridal TV programmes to describe adding accessories to enhance the look. When a bride finds a dress that she likes, the consultant may offer to jack her up, meaning to add all the accessories like tiara and veil so that she can visualise how she may look on her wedding day.

Bride-to-be: I love this wedding dress.
Consultant: Would you like to see it jacked up?

by FireflyScotland May 22, 2021

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