Top Definition
A boil or cyst that doesn't appear to be very big, but when you pop it, a massive amount of pus comes out. It surprises you like Susan Boyle.
That little boil on my arm looked like a whitehead, but turned out to be a susan boil.
by Daveinkc August 24, 2009

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×