Zwoepert

A piece of skin, generated by a very fat body, which became very skinny, so only the skin remaines. It is also very sweaty, eg dutch "zweterig", thats why it starts with zw.
The "oepert" part of the word is a abbreviation of the dutch word "poepert", which refers to the anus and buttocks area.
With this Zwoepert, one can swaffel objects.