Condensed form of the name 'Martin Luther King Jr' (minus "Jr." of course), an early-mid 1900's clergyman and African American Civil Rights activist. January 15 is a national holiday in the United States to commemorate King.
Most often used with 'day', MLKing is widely pronounced two ways.
"Milking" Day, or "Mulking" Day
On the last day of the semester, people go to secret spots where no one can see them, and perform this action which is open mouth kissing, involving the tongue.
Many people do this because they won’t see their significant other in a while, so they do this to say goodbye.
Hooman 1: On the last day, I was making out with my girlfriend
Hooman 2: Where did you go?
Hooman 1: Behind storage containers
This is the term used for when you pull a skinnyman with a bowl haircut and take him back to your home to spit on him. You may also take their virginity and let them anal you. However, this is thirsty work so must make your tired victim some lovely waters for the morning.
“Wow omg dude, look at that amazingtwink over there with the bowl haircut!!! I need to take him home and make waters with him man”