Feed the Birds 

"Feed the Birds" was a beautiful song in the musical/movie Mary Poppins, a famous 1964 Disney film. It is about a poor old lady who spends her time trying to feed the poor birds near a cathedral. Meanwhile next door, there is a bank full of people who couldn't care less.

Not made up by Nathan Fillion. Firefly was still a good show though.
But Mary Poppins is beautiful in a way unsurpassed.

Come feed the birds,

Show them you care

And you'll be glad if you do

Their young ones are hungry

Their nests are so bare

Feed the Birds by DavidlikesDisney May 13, 2012

feeding two birds with one scone

The vegan version of "killing two birds with one stone." Getting two things done that takes the effort of only one or two things getting done at once that usually has to be done separately. An "idiom" (play on words) of an old saying. An aphorism.

I had to go to the grocery store and post office. So, instead of going to the grocery store and then going home to put the groceries away and then back out to go to the post office, I would go to the post office first, then go to the grocery store, thereby "feeding two birds with one scone."

feeding two birds with one scone by jcaelitescuba January 31, 2014

Two Birds, One Bone 

Slang for a mff type threesome. Nearly every man's fantasy.
Derived from the common phrase "killing two birds with one stone".

Two Birds, One Bone is fun fun fun!

Two Birds, One Bone by Submitters of Words June 30, 2011

flying with the birds 

A person that is currently on any type of drug

Pot got me flying with the birds last night

flying with the birds by Alan Rodrigues November 23, 2003

the birds and the bees 

Old term used to refer to adult relations between a man and a woman. The birds reflect women, the bees reflect men, in a subtle but notable reference to sex. These days, we tend to be a lot more abrupt when discussing these issues pertaining to 'the birds and the bees'.

Why yes, son, she is a fine looking young lady. One day, I must sit you down upon on my knee and teach you about the birds and the bees.

the birds and the bees by Stuart October 11, 2003

The Morning Birds 

A malady in which one involuntarily remembers images and snippets of conversation from the previous night's activities.

ie, The egg slipped off his fork, as he remembered how the tall girl had rolled her eyes at him outside the bar the night before. In addition to a throbbing headache, John had woken up with a vicious case of the morning birds.

The Morning Birds by Chrissisyphus December 27, 2008

the birds and the bees 

a polite way of saying boys and girls + fucking w/out condom = baby

"Son, let me tell you about the birds and the bees." "I already know about the birds and the bees." "No, I mean, the other type of birds and bees." "Ohhhh..."

the birds and the bees by Mo Money October 13, 2003