A.) someone who freeloads and gets of
scott-free without having to pay for
everything. Derived from the expressing "fat rat in a chees factory"
B.) a person whose rolling in dough
A.) Man, we
ordered the 5-5-5 deal and
home boy Darious didn't put in a cent, but he still ate like a king! he be da fat rat wit da cheese
B.) Man, i'm gonna be
a gangsta rappa, yo! Den i'll be da fat rat wit da cheese!