That would be a "dikke reet". (Thick bum)
because it is
fat bum
a big fat a$$ bum did
my fat bum
my bum is the fattest man in the cheek you are fat if u read this fat men are fat $$$$$$$$$$
your big fat bum
your big fat bum
Someone has to wipe their bum because they are too fat to bend down
Fat and blue, with a spiky bum
you have a fat bum
he is a fat ugly bum
Enough to fatally crush you.