Originally Posted by harvey

keep it up phrases / idioms:
Continue to do or maintain something, as in They were playing loud music, and they kept it up all night long. [Mid-1700s] Also see keep up

Mutt may refer to:

Animals:

* Mixed-breed dog, a dog that has characteristics of two or more breeds, a mongrel. Also used as a generally derogatory term towards a dog.

People:

* A colloquial term for people of very divergent ancestry; can be pejorative, neutral, or positive, depending on the context
* Nickname for Rodney Mullen, worldfamous skateboarder
* Robert John "Mutt" Lange, a successful music producer
* Nickname for Joseph Summers, a mid-century English test pilot

In music:

* MUTT, an album by Roots music group, Lost Dogs
* "Mutt", a song from blink-182's 1999 album Enema of the State

In comics:

* Mutt, a character in the Mutt and Jeff comic strip
* Mutts, a daily comic strip by Patrick McDonnell

Mutt may also refer to:

* M151 MUTT, (Military Utility Tactical Truck), a US military jeep / light truck
* MUTT (MUD client), Multi-User Trivial Terminal - a gaming interface for Windows
* Mutt, a character from the G.I. Joe universe, usually accompanied by a dog named Junkyard
* Mutt (e-mail client), a terminal-based e-mail client for Unix-like systems
* A type of Hindu monastery, also spelled as matha, math and muṭh
* Mutt Williams, a character from Indiana Jones and the Kingdom of the Crystal Skull, played by Shia LaBeouf