What is Aim Tag?
n.a process very much like phone tag--one instant messages their friend who does not respond until later when one is away/idle. One returns to the message and answers it, only to find their friend is once again away/idle. This process tends to repeat itself many times until one can reach one's friend, or one participant gives up.
you (12:04:22):hey i havnt seen u in ages! whats up?
auto response from friend (12:04:24) out. call the cell
friend(3:12:51):oh hey i just got ur message and i no! wanna hang out fri.?
auto response from you (3:12:53): away
you (3:51:38): yea but only if the friggin aim tag stops long enough to work out a time.