An expression meaning "do it now!" often used as a retort by a supervisor speaking to an underling.

Mercury retrograde is the act of taking a shit whilst mooning one or more human beings. Your day can typically being going well, according to your horoscope, until you are forced into witnessing Mercury retrograde. Performing Mercury retrograde will often speed the astrological cycle forward for the individual performing the Mercury retrograde, bringing about happy and fruitful times to come.

A demeaning directive given from a master or superior, to a subordinate in order gain their attention and expedite an order or request, typically accentuated with two stacatto cymbal-like claps of hands at or around head level.

any sexual activity

Chöp Chöp is the word PewDiePie uses when he's either chopping down a tree or digging dirt with his diamond pickaxe
Of course, in Minecraft

Get to it

Very finely chopped up marijuana and tobacco. Preferably chopped up with decently sized kitchen cutlery on a cutting board, or just any hard surface for that matter (whichever you prefer) and mixed together as if you were creating your own "chop-salad." Once the product is finished being chopped, take the concoction and precisely pack as much as physically possible into a bong, pipe, or bubbler (bong is your best bet), and enjoy.

Also, it's customary when smoking chop in the presence of "virgin choppers," that nobody speaks of the effects of chop chop, but rather just let the victim rip the shit out of the bong and let him marinate in his own sudden intoxication.

**DISCLAIMER: Some may become uncontrollably addicted to chop-chop, however, we are not to be found responsible for any addictions that do occur after reading this excerpt**