a freakishly long penis...usually from the 8 to 10 range...in inches.
Dude, Ron Jeremy definately has a grillo.
di A.G. 03 marzo 2005
The condition of having an unnaturally tan penis in relation to the rest of your body. This is commonly caused by excessive masterbation.
Then he whipped his grillo out and I was like, "are you fuckin serious Peter, does your dick go tanning while the rest of you watches Bassmasters, what the fuck!?
di Mihlkdawg 26 settembre 2011
A sweet italian boy from alba adriatica, popular with friends, has a billboard because he is so popular.
Marco is a grillo!
di imayau 15 febbraio 2010