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
B/A Ratio is the "Boob to Arm" ratio which signifies the relation between the circumference of a girl's arm to the size of her chest and breasts. A large B/A ratio is considered highly attractive (i.e. large breasts / small arms), an equal ratio, neutral (small breasts/ small arms or large breasts/ large arms) and a low ratio, unattractive (large arms, small breasts)..
Text fits
Save
Cancel