What is Sirloin?
1.
When a woman is extremely good-looking but not quite among the best
(This is a slang term used by men with minds in the gutter )
A hot chick you would like to see on the beach .
2.
Refers to the finest type of meat a man can get.
Often the 'Sirloinivity' of a subject is inversely proportional to it's age.
little girl crying in the back ground:
"sounds like sirloin to me"
See
3.
The best, great, nice, awesome, amazing.
Just another new synonym for cool.
"Yo..that movie was awesome! It was sirloin!"
See