What is Manilla?
1.
"man-ill-uh", same pronunciation, but opposed to manila envelope or manilla, a cheroot made in Manila, the Phillipines (dictionary).
Derived from the substitution of "van" from the noun "vanilla" combined with the noun "man" referring to a male Homo sapiens sapiens.
The male seed required for human reproduction. This creamy off-white substance goes by the scientific name "spermatozoa", but more often than not by the American slang terms of "jizz", "come", "splooge", "man juice", "manicing" or "RPGs".
Example 1.)
Woman: "I need some vanilla extract."
Man: "Well, if you hang around for a bit, I could get you some 'manilla' extract"
Example 2.)
Doctor: "I'm going to need a sperm sample. Here, use this container."
Patient: "Do you think you could lend me a nurse to help out with the manilla extraction?"
See
2.
Manilla: an envelope of above average size usually 8.5 X 11 inches, composed of recycled materials that are slightly yellow in color. Used as a greeting between two caucasian individuals. Can also be used as a greeting between two strangers at a party, where one individual thinks the other is a sexy
"whats up manilla" on the phone.
---or---
"whats up manilla, you looking fine tonight" at a social gathering.