A "duffleson" or "duffle" is a girl with a big booty , ass, butt and is the long term name for that like
Example:
How you could use this is by.
1) damm that girl meg has an amazing "duffleson"
2)Hey yo rj you see that "duffleson" on that girl!?
Or it can be used in its short term
Duffle
1)Yo blake that girl had the nicest "duffle" ive ever seen!
2) damm check out the "duffle" on the waitress
1) yo mark my teacher has a nice "duffleson"
2) yo nick i was walking to class and saw this cute girl with a perfect "duffle"