The space located directly between the male scrotum and the anus opening. Otherwise known as the space "between your balls and your butthole". Also used as a dorogatory term used in name-calling bouts.
"Ugh, my vumpler itches." "Don't be such a vumpler." "Oh, that hit him right in the vumpler."
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.