Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
abbr. Bulletin Board Back Door verb A double entendre referring to the killing of, or stealing from, the character of a close friend on a bulletin board system door such as Legend of the Red Dragon or Usurper. BBBD-ing was responsible for a wave of Jr. High and High School fallings out among certain social circles throughout the 1990's.
Text fits
Save
Cancel