In the bases metaphor for hooking up with women... Tagging up is when you are at one base (such as 1st base, makingout) and you move to go for the next base (2nd- grabbing boob)... and you get denied by the girl. You then return to your original base and await for your next opportunity.
I was hooking up with Emma this weekend and i went for second and got denyed but luckily i was able to tag up.
Get the Tag Up mug.
An expression used to claim ownership of something that is not and (potentially) never will be, yours, but is highly desirable. Examples may include a Ferrari, a super hot female, a mansion. Once something is "tagged up on", it cannot be tagged by a buddy, it is yours, forever...in fantasy land.
Dave: "Woah, check out the chick in the black bikini!"
Bob: "Yup, wow! Tag Up On That!"
Dave: "Aw, man! I was gonna ask her for her number too! Well, I guess she's yours now."
by Chrisophylax January 17, 2014
Get the Tag up on that! mug.
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!"
by Shauna Hamilton December 31, 2005
Get the tagged up mug.
Riding around on a BMX, looking fresh whilst wearing a paint mask with a rucksack on filled with Spray Paint.
Do this in a group of 8+, going out at 1am hitting up all the major visible parts of your city leaving your mark.

A “Tag-Up” ends in going to a party which is held on a field. Loud music, alcohol and drugs.
You will hear House, RnB and Rap music at these partys the DJ is normally a well known underground DJ, and it changes every time there is an event. The people who attend these partys are not all the type of people that go out on these "Tag-Up" events. They are just there for the music, alcohol and drugs.

Only one person is aloud to take pictures of the night, and that person is a trusted member of the group. All images go on to the private site so people can see. Images are not aloud to go public without permission.

You get randomly invited to these events after you have been vouched for by another member and you must attend at least 6 before you are given rights to join the group officially, and gain access to the website.
Lets go on a Tag-Up
Nahh, it's dangerous man. People get arrested all the time for it
by TagYourCity July 31, 2011
Get the Tag-Up mug.
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.
by James D. Klein, Jr. March 25, 2005
Get the tagged up mug.
When you are ending a call with someone and neither of you can close the call and get the phone hung up. This can be uncomfortable and prolongs the call unecessarily.
Eric~"ok, well I'm gonna go now"
Alta~"ok, I hope you have a good night"
Eric~"I will. I hope you do too"
Alta~" I know I will, you too"
Eric~"ok, goodnight"
Alta~"sweet dreams"
Eric~"don't let the bedbugs bite"
Alta~"ok bye"
Eric~"Bye"
Alta~"bye"
Hang-up tag. Puke!
by Ericjenson May 13, 2011
Get the Hang-up tag mug.
A Pop up tag is a hashtag game on twitter that isn't scheduled. Somebody thinks of a hashtag they think is fun and post it on twitter, people that like the hashtag play along.
I'm not playing that hashtagroundup tag I don't like it. I'm going to play this pop up tag instead
by Billy from Philly July 13, 2018
Get the pop up tag mug.