Peeing in a man's ass and then immediately putting in a butt plug in his butt forcefully. Then, letting it marinate into a mix of poop and pee, similar to bird poop. After that, you proceed to rip out the butt plug like a ripcord out of a Beyblade and immediately put it into a can and throw it at said bird poop butt person.
Someone who spends their time in a desperate attempt to pull non-interested girls by spending time with them laughing at their non-funny jokes and generally brown-nosing them rather than hanging out with their mates (if they have any) until everyone becomes so sick of them that they are shunned by soceity.
This aggravates said mates, prompting them to call the person a 'bird gay'.