An unprofessional, usually dodgy, modification or fix done at home. Generally looks crappy.

When you didnt do your homework, and your in school, you can normally borrow the homework from a girl. Normally you would say "hey can i get the homework from last night". But if you want a little something extra, just say "hey can i get a homejob". A homejob is when a girl gives you their homework and after, before, or while they give you a blowjob. So you get your work done, and you get head!