1) An expression of satisfaction, especially when you've accomplished something
big. Equivalent to "That's what I'm talking about!!".
2) One way of catcalling.
Hot chick walks by, and you yell "Grind the
meat!!!".
3) What Mr. Trump did to
Grandma Hillary's beef curtains.
4) Essentially anything else you might deem appropriate. There is actually no wrong incorrectto use this phrase.