To Dark-Horse (verb)
To act in a sly or secretive manner, rarely letting others know what you're doing, where you're going, or who you're going with.
Being a very shady character, and being quite quiet are essential to perfecting this action.
A good poker-face is obligatory, of course.
I saw Ryan buy 4 different cards for Valentines Day
, he is such a Dark-Horse, i never know what he's up to.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug