mack face
a face someone makes when he/she is sexually interested in the person that he/she is talking to or checking out.
I see how you're looking at her, you even got your mack face on.
Macked in the face
When one gets punched in the face so hard that you could compare the force of it to a Mack truck coming full speed. Basically another word for getting knocked out cold.
Jon: Yo, did you see that street fight earlier today?
Marco: Yeah bro, Tony got macked in the face! He couldn't even get up.
Marco: Yeah bro, Tony got macked in the face! He couldn't even get up.