A "bebo" is when you take your index finger and poke someone, multiple times if possible, in the buttocks, followed by saying "Bebo!" (I wouldn't recommend doing it to anyone besides sibilings)
Sibiling: Why did you poke me in the butt?!
Me: ...Bebo! Haha!
if someone calls you bebo then they really got a thing for you and your mad special to them .in other words they love you .simple as that .
hiii my bebooooooo