Comes from the Hebrew origin of Be'Hayeha. Can define several emotions during a conversation, depending on the intonation of the speaker. May be compared to "Get out of here" that is commonly used in English.
The emotions can vary between Amazement, sneering, Doubt in the other speaker,
The emotions can vary between Amazement, sneering, Doubt in the other speaker,
Amazement:
A: Did you hear about the new Lamborghini, It can 0-300 km/h in 3 seconds?
B: In your life.
Doubt:
A: I saw a ghost last night.
B: In your life. (stretch the words with a low pitched voice).
A: Did you hear about the new Lamborghini, It can 0-300 km/h in 3 seconds?
B: In your life.
Doubt:
A: I saw a ghost last night.
B: In your life. (stretch the words with a low pitched voice).
by RaamEE May 13, 2005
Get the in your lifemug. A phrase used to punctuate a comment or insult. Often misspelled "you're y4", "Your T4", and/or "Your t4". Also the basis for the sorority your-a t-a four-a AND the IOS (Institute of Spazzology). Only seven people, to this day, know the true meaning of your t4.
by Emily and Sally, Co-Founders of your-a t-a four-a. July 22, 2003
Get the your t4mug. 
by Penguin Fizzle July 22, 2005
Get the your manmug. by BadassMemes June 19, 2016
Get the your dadmug. by Cairnage January 14, 2010
Get the Your Mommug. by Quido1 March 10, 2008
Get the your gaynessmug.