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
M Kat is a nickname for Mephedrone, also known as 4-methylmethcathinone (4-MMC), is a stimulant and entactogen drug of the phenethylamine, amphetamine, and cathinone chemical classes. Mephedrone is reported as causing effects described as a cross between those of methamphetamine and MDMA ("Ecstasy"), producing euphoria, stimulation, and empathy. It generally sells for a higher price than MDMA but is cheap to produce meaning that manufacturers are making "huge amounts of money" from selling the drug
Text fits
Save
Cancel