Is the unisex Western Australian take of the phrase "my bro". Use of this word is very common with todays' youth and some old school use it as well. Because of the thick Aussie accent, the r is often not pronounced, thus sounding like 'my ba' or 'mabah' however the context that this word is used in makes it acceptable to use it more commonly than "bro" due to the fact that it is used for both male and female.
When you purposely ignore someone for the fun of it, and then pretend to get mad at them for cluttering up the chat room because they tried to reach you for a period of time. (this is via internet chat/ or texting)
This is named after a Gamer who's name was "MyBack" and would do this in group chat.
Man one: Hello! 9:30
Man one: Hello? 9:35
Man one: r u there? 9: 53
Man one: Plz answer! 10:00
Man one: It's important! 10:15
Man one: r u listening to me? 10:23
Man one: dude (or chick) PLEASE PICK UP IT'S IMPORTANT 10:43
Man one: ok ill see you later.... 10:54
Man two: SHUT UP 10:54 (one second later)
Man one: dude u r srsly pulling a myback
noun: spoken as one word, meaning "my baby's daddy." Heard frequently on "Judge Joe Brown," "Judge Mathis," and "The Jerry Springer Show." Used by illiterate people of all races and ethinicities, although most prevalent among blacks. A similar word set is "mybabymomma," meaning "my baby's momma," of course. Variations in pronunciation include "muhbebbidaddy" and "mabaybuhsdadduh."
Judge Joe Brown: So, Ms. Federline, who takes care of your children while you're out streetwalking?
britney: wail, they be either wit mah momma or over to they daddy's house, yer Honor.
JJB: Your mother and who?
britney: mybabydaddy. We broke up when he found out I was gonna give him another bastard child for him to not support.
JJB: Y'all are pitiful and I've heard enough!! Case Dismissed!