bite my shiny metal ass

all bark and no bite

Full of big talk but lacking action, power, or substance; pretentious.

ass over teakettle

Tumbling upside down.

beat someone's ass

To thrash someone.

bite me

An expression of discontent or aggravation to another party.

bite my ass

Go away!; an expression of disdain or dismissal.

bite of the cherry

A chance; an attempt at something, especially something that can or should only be done once.

bite of the reality sandwich

A wake-up call, a reality check.

bite off

To accept or commit oneself to a task, project, notion, or responsibility, especially one which presents challenges.