Oshbam is a nickname for an illegal immigrant. Also the pet of Celador, Swag Daddy Jesus and Paua.
Oshbami (plural) are unable to playbass.
"Oshbam just came over from -insert country name here- and im pretty sure s/he is here illegally."
"Yea i know, but Celador and Swag Daddy Jesus are keeping her under control"
"But there are more of them coming, its an Oshbami invasion, AND THEY CANT EVENPLAY BASS!"