This is my first JAPH and first obfu post. The code may be easy to see through and the decoys obvious, but this may be the first JAPH who's basis is a "Yo mamma" joke.

@j=unpack'A24'x3,
$_='Your mamma so fat it take a train and two busses to get on her goo
+d side';
$_='148142210062219227200135214135060215280066149205230143199168163229
+197209';
while(s/[\077|102]\w\d//){my$c;map{s/.//;$c+=ord$&}@j;print chr$c-$&}
[download]

Enjoy.