A fork of Rural Dictionary
An insult thrown at someone to show them how much of a flirt their mum is thus probably making her a slut.
Dave: steve your retarded Steve: I facebooked your mum
Said to someone who's extremly slow at understanding something just as they get it. This mimics the end of 'Honey I shrunk the kids' where it takes one kid the entire film to get a joke.
Dave: a horse walks into a bar, the barman say's why the long face? Sara: I don't get it...is the horse sad?....er....Oh cos Horses have got long heads. Dave: Oh I get it, French Class!!