An urban professional who continually re-wears suit pants to work every day, but fails to iron them, thereby creating a proliferation of creases behind the knees and alerting everyone nearby to the fact that this person is a crease monkey.
A crease monkey will also tend to have poor hygiene and wear outdated clothing. They tend to be social introverts as they have no real friends to point out to them that they smell, their clothes are outdated and they have tons of creases behind their knees.
"Wow, look at that ugly green suit, what is that from 1981?"
"Haha, probably. I don't think he's had it pressed since 1981 either, what a crease monkey."
"Total crease monkey. I bet he smells."
2. Vage mechanic
Worker: can I have the afternoon off to go to my gyne appointment?
Manager: Sure. Visiting the vage mechanic again?
Worker: yeah. Time to let that crease monkey get a good look under the hood.