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1.
To get extremely good fellatio/head
I got such great head last nite, I woke up this morning and had to pull the drapes out of my ass!
by exponentialhalitosis December 10, 2004
 
2.
The mintest thing in the world, nothing can compare to a Greathead because it is just pure greatness. Nothing can alter its greatness whatsoever because it is 100% immortal and its beauty lies in the fact that it never grows old and will always remain beautiful and youthful until the end of time.
When is a leaf not a leaf? When it is just beautiful. Greathead is very much similar to this.
by William Oliver Sykes September 30, 2010