Used in response to an unreasonable request. The implication is that the person making the request seems to want everything on a silver platter, and they want a pony as well.
A: Your web site sucks! I want to be able to do this, and this, and this, and...
B: Sorry, dude, no pony.
A play on the phrase "no one", where "one" is replaced with "pony". It is used by the characters in my Little Pony and is also commonly used by bronies.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.