Diminutive of "my bad", the enunciation of which saves neither the enunciator nor the listener any
time of mind or eardrum, though which does
indeed spare the enunciator the torment of touching the tip of his tongue to the
front upper roof of the mouth as when one does actually say "bad".
Yo '
sup?! I lament the laze and malaise of the muthafucka who can't bring himself to say "my bad" but instead
must employ "my b" in its stead,
even though there is no contractive benefit gained by the effort, muthafuckas!