Giving a zombie a blow job. Instead of spitting out a wad of cum at the end, the giver usually has to spit out the zombie's dick because it has fallen off. Only a really dumb ass would give a zeej. Note that the reverse of this scenario is really just a zombie that probably doesn't have any teeth trying to gnaw on a dick.
Have you seen Left 4 Head? Zeejs everywhere!
by Laser Sanchez February 27, 2009