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
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawnowning freak