Drunk Dial
A drunk dial is a communication via telephone (usually through talking but also applies to text messanging) that is somehow embarrassing or absurd. One drunk-dials to emote, excoriate, declare, confide, or proposition, often at a grossly inappropriate hour. The best drunk dials are those whose purpose is to either insult or get back together with an ex.
Noun: "I got his drunk-dial."
Verb: "John made an ass out of himself when he drunk dialed Lauren."