Skip to main content
Dictionary
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Do Not Sell My Personal Information
Information Collection Notice
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
DMCA
© 1999–2026 Urban Dictionary ®
Words of the Day
Browse
Add a Definition
User Settings
Definitions by coolguyjohn
Jack
Share definition
Flag
Jack is a very
annoying
boy
“He’s
annoying
”
“
Yeh
that’s
just jack
”
Jack
by
coolguyjohn
March 6, 2019