back heavy

To have a big butt

That girl is very back heavy

The Heavy Back Pocket

A Descriptive term used to describe a an individual who may have deficated on one's self with their pants on hence the back pocket; the term heavy describes the fecal matter.

After a shit reminiscent aroma swept through the library one of the students shouted out "whose got the heavy back pocket?"

Heavy back

David bullshit

I can't lift you up cause my back heavy

These ratchets have heavy backs
These ratchets have heavy backs