A child born to a white (or at least non-black) mother and black father.
Oh look, Mariah Carey's having Nick Cannon's blaby.
di b-buckets 08 ottobre 2009
Bull-baby or bullshit-baby. The name given to the imaginary "baby" a woman is having to make you stay with her/feel guilty/give her money.
"She's having a BLABY mate.. I know coz I had the chop 5 years ago."
di El Scroto 29 agosto 2003