obtuse caboose

1) a: a big fat booty (as opposed to "a cute" booty)
b: a tushy exceeding 90 degrees
c: an exceptionally wide train car bursting at the steams
d: the rear region of an obese person
e: an incredibly vast rump

1) "Wow! Look at that obtuse caboose!"

2) "Hey, Can you move? I can't get around your obtuse caboose."

3) "Hey, you need to train to turn that the obtuse caboose into a cute caboose!"

4) "Let's take a tour of the obtuse caboose!"