I.T.D. Is a name for a Internet Transmitted Disease, Spread around as a joke, Started with a Few people on Skype named Tom, and Phil. (It's mean't as a complete joke, it doesn't mean any thing.)

When you contract a sexually transmitted disease from sharing a can of Nestea.

Note: Commonly mistaken for N.e.s.t.d. (When one contracts a sexually transmitted disease after sticking their penis in the slot of a Nintendo entertainment system.

A girl that looks like she's down to have sex, but is also probably so easy that she might not be carrying something. Proceed with caution.

See related topic: Jersey Shore

When one person (traditionally a female, but with today's seemingly more lax attidudes towards same-sex encounters, it could be anyone) gets 5-T'd by a posse of mexican bandits.

The T.D. unit is a new unit to enter the SI system of units. The T.D., otherwise known as the Toan-Dang, is a way of measuring stink/pong levels of someone or something.

A game, usually played by girls. It stands for Truth, Dare, or Marry-Fuck-Kill. Player 1 will ask, often by writing it down, if Player 2 wants T, D, or MFK. Player 2 chooses, and if it's Truth or Dare, a question is asked, or Player 2 is dared to do something. If MFK is chosen, Player 1 picks 3 people (if it's girls, guys are listed, if it's guys, girls are listed) and Player 2 has to say who they would rather marry, fuck, and kill. Usually the people are people Player 2 doesn't like, but sometimes they could be people they really like. Basically just a game for very bored people, and it's ALWAYS entertaining.

Textaully Trasnmitted Disease or T.D.I

you get this disease when you suffer from frequent texting which leads to blurry eye sight and part of body where you keep your phone vibrates for no apparent reason.