Don't know if this has been suggested before.
(And i'm sorry if it has been)
But this would be pretty neat!
Rock/Paper/Scissors
1. You declare a rock/paper/scissors Challenge with someone.
(Example: When you're using the Hug Emote/Mistletoe)
2. They'll right/left click you (Depending on how you set your mouse buttons) and select the option that says Challenge.
3. If they accept it's game time. You'll be locked on and in a battle.
4. May the best man/woman win.
Side Notes: a random player can come and accept the challenge, even if you challenge someone else (Just like the other emotes)
Thumb Wars
1. You declare a Thumb Wars Challenge with someone.
(Example: When you're using the Hug Emote/Mistletoe)
2. They'll right/left click you (Depending on how you set your mouse buttons) and select the option that says Challenge.
3. If they accept it's game time. You'll be locked on and in a battle.
4. May the best man/woman win.
Same Rules/Methods apply, as stated above.
Additional Notes: Side notes apply to both side. Don't get mad if you lose.