instant migrate 

(to) Instant Migrate

Meaning to log off MSN, AIM, or any other IM software without saying goodbye to the people you are talking to.

Someone who does this a lot is known as an Instant Migrator.

Person #1: I cant believe you Instant Migrated from our conversation last night.
Person #2: And...
Person #1: You do it all the time you f**cking instant migrator. It's really annoying.

instant migrate by urban--english-dictionary November 19, 2007

instant migrator 

Someone who often Instant Migrates.

These people seem to think saying something as simple as 'bye' or 'cya' before they leave your IM conversation is too difficult, so they go without saying goodbye.

Person #1: Morning, instant migrator
Person #2: What?
Person #1: You instant migrated from our convo last night
Person #2: So?
Person #1: You do it all the time.
Person #2: I CBA to say goodbye. (Person #1 walks away annoyed) Wait where are you going? Your just gonna leave without saying anything? I would never do that to you.

instant migrator by urban--english-dictionary November 19, 2007