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
A state of being. This can happen in both real life and via text message or IM. It occurs when someone says something to someone else (usually as a joke), and the person becomes really serious about the issue. They stay in this state for quite a while. They reply seriously whenever someone is talking to them. Indicators of serious mode: Lowercase only in sentences, ending all sentences with periods, one word replies, lowercase "LOL's", slow replies, setting their status as "away" or "busy", signing out of IM, replying with swearing, ending questions with periods, low use of emoticons, using an ellipsis and more.
Text fits
Save
Cancel