the act of staring one down, mainly directly in the eyes. not neccessarily bad or good. usually if you grill the opposite sex, it implies an interest in them, and if heterosexuals grill the same gender, it usually means they dont like them, are testing them, and wouldnt mind smacking the sh-t outa them.
good: "hey buck, that girl is GRILLIN you HARDCORE, go talk to her"

bad: "if that punk dont stop grillin, im'a see if he got a problem"
by buck January 26, 2004
The act of looking at someone with a angry or serious face to say something is wrong or that you did something wrong.
Hey look at that girl grillin you because you didn't call her last night.
by vlad March 31, 2003
The act of a smile or grin showing gold teeth.
"Yo man lil jon was grillin at the concert last night cuh"
by L Boogy January 29, 2006
did u see his smile, dat boy grillin!
smile for me daddy, I wanna see your grillz....
by shay wade August 26, 2007
A sexual activity in which three men lay side by side and a fourth man lies on top of them at 90 degree angle and rolls around. If a fifth man is available, he serves to "flip" the man on top.
Stop illin' and killin'
Stop grillin'
Yo, black, yo (we are willin')
by Time Zero May 21, 2006
when you are rollin your nuts off on Ectasy.
when you feel as warm as a little grill full of coals and your blowin off steam.
That night i was walking home from the bars after I rolled and i was grillin like madness!
by DooMinator June 21, 2006