someone who is extremely acting like a "bastard" (as big as a mastodon). as the word implies.
"you are the biggest most ugliest bastodon to have put gravy on my underpants.."
"some guy just sucker punched a nerd walking in the streets.. what a bastodon.."
(adj.) (ma · dating) : A Filipino/Tagalog term for describing exquisite, classy, sophisticated, and attractive in one word. A figure of speech (Euphemism) that depicts something/someone as awesome.
"That man who walked towards the bar had so much class that he's the only madating man in the club."