She has a terrible problem
with moisture-induced glitter CLUMP.
The Big Bang Theory Season 2, Episode 18
They dance, they sweat, they CLUMP.
The Big Bang Theory Season 2, Episode 18
...he never would have found
that stupid little CLUMP of cosmic schmutz.
The Big Bang Theory Season 2, Episode 4
Really, a walking
CLUMP of swamp grass?
The Big Bang Theory Season 11, Episode 12