To clean up and dress up a little before going out. To spiff up a bit.
"We washed some clothes, cleaned up the house, and then tagged up and went over to the Watkins' for dinner." Entry for Sunday, Nov. 28, 1920 in Andrew Klein's diary, Tacoma, Washington.
The word Tagged up is the meaning of making a mark on another person by means of sucking. Also known as a hickie. They are signs of possesion of wanting possesion. No one really knows.
"Hell I heard Shauna got all tagged up!"