Used in written communication (typically email, SMS) to express uncertainty, confusion or bewilderment - often with an element of frustration. Typically this is a consequence of failure by a third party to provide sufficient information, or total disbelief at how someone could be so completely inept.
Used in situations where you make a comment or complete an action that secures your spot in hell.
IAGTH was made popular by IAmGoingToHell.com, a website where people share stories about the hellish things they've done.
"I got a hand job from a freshman in high school last night. I'm a sophmore in college. IAGTH."
"My boyfriend gave me his sweatshirt this past summer. He asked for it back because it has started to get cold lately. I told him I would buy a new one because "I wanted" his. Truthfully, I used his jacket to catch another guys load after a bj. The other guy had left a jacket here so I gave my boyfriend that. IAGTH."
A Character in the play by William Shakespeare, "Othello". Iago is the "baddie" and manipulates Othello into killing Desdemona because Othello believes Desdemona has had an affair. Iago is a nasty piece of shit, however, he comes up with good lines like....
O' beware, my lord, of the green eyed monster. it doth mock the meet it feeds from"
A Iago is a person who is smart but doesn't think it or just doesn't want to admit it. They are kind and empathetic but you still don't want to get on there bad side cause they could easily fuck u up. They are athletic yet also homebodies. They cherish there friends and especially there crushes. If u ask a Iago who there crush is they will probably not tell u because they don't want to be hurt or laughed at. If u ever date a Iago u are really lucky because they will do anything for u, yes even die. If u are or are going to u better get ready for a bunch of " I miss u" and "I love you more than anything, anyone, everything and everyone". They also act really tough on the outside but are really soft and easily hurt on the inside. If u ever hurt a Iago it could leave a very big impact one them.