Lester was more interested in what people had to say on the engineering message-boards than chatting with the fatties.
You know that these fatties actually follow me around on the net now, asking me questions in message boards about engineering?
late 14c., from fat + -y (2). As a name for a fat person, attested by 1797 (with -y (3)).
fatty fat·ty (fāt'ē)n.
Containing or composed of fat.
Characteristic of fat; greasy.
Derived from or chemically related to fat.