A number sequence typed into calculators or other digital devices by immature junior high students to display a naughty yet juvenile message. The message, when flipped upside down, clearly reads, "BOOBLESS."
See also 7734206
Bobby: "Hey, look at this!"
Bobby: "This describes our stupid teacher... ::types into calculator, holds it up to Johnny::
Acutally, 2138008 on a calculator upsidedown says "BOOBEI(backwards)S"
Something you do in your spare time in 6th grade math class.
Kid1- *types 2138008 into calc* "Look at what I can spell."
Kid2- "Idiot, the S is backwords and the I&E are switched."
Actually, it spells BOOBIES, not BOOBLESS.. That would be 55318008
All the geeks in grade school did this when they wanted to get a girl's attention.