A portmanteau of "Tank" and "Anxiety". The common occurrence in any MMO (Massively Multiplayer Online) game in which the main defensive and attention-holding party member, the Tank, expresses feelings of doubt and lack of self-confidence. Many players feel exposed and at high risk of being the "leader" of the party by being the tank, causing the worst cases of "tankxiety".
Paladin: "Look, I usually run healer, I don't know how to hold aggro yet. I can just learn tank another day..."
Friend: "Shut up. EVERYONE has tankxiety when they first start, but it's just because you're stressing over the little stuff."
Frank - "The fuel needle is under a quarter! I'm coming down with a case of tankxiety! SHIT! What if we run out of gas on the 401? SHIT! Oh no, the anger is setting in! GOD DAMN HONDA! FUCK YOU!"
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.