"How now brown cow?"

"How now brown cow" is a phrase used in teaching a style of public speaking in which gesture, vocal production, and delivery are emphasized to demonstrate rounded vowel sounds.

Teacher: Work on your vowel sounds.

Student: "How now brown cow?"

Teacher: Rounder, please...

The black cow flies at midnight

The black cow flies at midnight means anything you want. Also used for guy code, "is your girlfriend, wife, significant other around"? This phrase is used to check if the coast is clear.

This phrase is also used to speak in code for any real day situation: is the black cow flying at midnight?

Examples: when you don't want people around to know what you are talking about.

Yo bro, the black cow flies at midnight?

Yup

Ok let me know when your girlfriend leaves.....

brown chicken, brown cow

An onomatopaeic imitation of the guitar riff commonly heard in 1970's porn movies.

Jim: "Hey, where are Abby and Jake?"
Tom: "Brown chicken, brown cow."

My Cows Can Fly

Flying cows are extremely rare, of course. This is an expression of supreme self-confidence. One who is able to "steer" the conversation without being a "bully". This may seem "udderly" ridiculous but it's still "hay-larious".

"Sure, my cows can fly. They need two seats and don't fly as much as they use to but sure, they can fly."

"Oh yea? My cows can fly."

take the cow out to pasture

when you have to jack off to get the rest of the cum out of your dick after having sex

After I fucked Jessica I had to take the cow out to pasture.

brown chicken brown cow

A farm joke thats said in the bow chicka bow wow

whats the sexiest animals on the farm?
brown chicken brown cow

Cow Egg

UK: In Britain milk can be delivered to the doorstep in glass bottles. These are sometimes called cow eggs.

The milkmans here, go get a cow egg so we can have a brew.