What is Grinded?
1.
To dance dirty with a girl or a boy, at a party for example.
"hey joe, did you go to that party last night?"
"yeah dude! I grinded with Jane!"
See
2.
came about through playing too much of the Tony Hawk's Pro Skater games (that's a skateboarding video game ladies and gents) and realising that "I did a grind" was too awkward to say.
I grinded that rail then did a kickflip onto the tabletop
