a knitted garment with cum on it typically with long sleeves, worn over the upper body
As she crossed the office in her jumper, a colleague pointed out the obvious cum stain on it, at which point Helen realised she was wearing a cumper.
A jumper that is worn with cum on it.
As she crossed the office in her jumper, a colleague pointed out the obvious cum stain on it, at which point Helen realised she was wearing a cumper.