I intended to do a wordplay and substitute a Steemit tag with the tag between wrestling teammates. The guy in that GIF desperately wants his partner to reach out for a tag so that he can replace him in the ring. That was me being geeky and reaching too far I guess. :-)
In most team matches, only one competitor per team is allowed in the ring at a time. This status as the active or legal wrestler may be transferred by physical contact, most commonly a palm-to-palm tag which resembles a high five.