The act of vigorously masturbating penis, aided by either poppers, weed, or both and often at the expense of personal relationships and productivity. So named because the masturbator engaging in the monkeybate is often so overwhelmed with pleasure that they screw up their faces in a way that mimics a baboon, gorilla, or monkey.
Dark circles under a girls eyes. The term is derived from the girls looking sickly, therefore possibly bitten by a virus ridden monkey. There are a certain subset of guys who have a fetish for this look. Some may say they are "smitten for the bitten". This look can be achieved via makeup, lack of sleep, and heroin use. Also called MonkeyBites
When the gentleman is receiving fellatio from his good partner, and wishes to heighten the pleasure of the general act he may want to 'monkeybag' them. This involves the simple act of tugging the partner's ears away and perpendiclar to the head, thus causing a change in appearance to these as well as the shape of the oral cavity and lips. The surprised noise emitted (invariably also simian in nature) increases the stimulation on the gentleman's lingam whilst rendering the aforementioned partner even more ape-like.
"I had to use her earrings as a monkeybagging aid again. Dear Felicity, she can certainly cook a good breakfast but she needs help when she's feeding on Mr. Pickles"