Definitions by Jbopper

mblah 

An expression used when previous attempts to say something didn't go as planned, usually due to tripping over one's own words. Also used in text to indicate a typo has occurred.

That's a stupid stuper, supid, stuper - mblah! - Stupid superstition
Oh thank hod. Mblah god

mblah by Jbopper December 5, 2020