Skip to main content
Search Urban Dictionary
Back
Start typing to search.
Searching
...
Dictionary
Store
App
Chat
Blog
Help
Words of the Day
Browse
Add a Definition
User Settings
Definitions by brylie25
boo
Share definition
Flag
a way to scare
someone
that started as a
tiktok
trend
friend
1: boo!
friend
2
: ahh! *falls*
boo
by
brylie25
November 13, 2019
Get the
boo
mug.