"Frumpy Dumpkins" is a generic name used to describe the "ugly
girl" that wants to be
hot in any society. "Frumpy" is used to describe her fugly, lumpy, or bumpy self while "dumpkins" is implying that she is the type of
girl you'd dump or find in a dump.
There also used to be a clothing line at frumpdumpkins.com that is stylish clothing for the not so stylish female.
"Look
Zach is hanging around ole Frumpy Dumpkins over there in the quad."
I got my new shirt at Frumpy Dumpkins house last
Wednesday!
That
girl is a lil frumpy & a lil dumpy so she is Frumpy Dumpkins.