back monkey
Someone who hangs around you incessantly, not able to take a hint and piss off. An annoyingly clingy person.
"Oh my god, that girl is such a back monkey, why doesn't she fuck off?"
Back office monkey
B.O.M for short. An employee of a financial service firm who pushes paper ie: does cost accounting, settles accounts, etc. This employee thinks that by becoming a Chartyred Financial Analyst, they will move to a more glamorous front office position and make more money. B.O.M's are easily placated by free donuts or pizza.
Douchebag and Lion are both destined to be back office monkeys for Harvey Industries.
monkey back
When you injure your lower back in such a way, that it forces you to lean over like a monkey.
P1: I was sitting in the floor for a few hours, and now I have monkey back.
P2: Ha! You're getting old.
P2: Ha! You're getting old.