What does buttplate mean?

buttplate meaning in Urban Dictionary

An excerpt through the Scruf Handbook: Page 33, section 4.A slab of material put on the butt area to safeguard you from unwelcome gaybee assaults. As soon as the faggy assailant attempts to shove their fag stick in your butthole a loud "gong" sound is heard as their penis crumbles against the steel. And now that fag is gonna get beatdown.