A deliberate mis-pronounciation of the french greeting "bonjour" taken from the mouth ulcer cream. Often used as a greeting, it is commonly used when answering the phone
Dude1 - Hey do you knowStress Level Zero? They're Indie Devs
Dude2 - Oh yeah, I've played Duck Season before.
Dude3 - They're making a new game called Bonelab!