Sonic Turd 

(Adjective) A piece of music, song or album of such low quality that one's ear-drums have an experience similar to being shit upon, leading to the listener feeling violated, disappointed or filthy for having even been subjected to it.

Coldplay's new album 'Ghost Stories' is a sonic turd of awful proportions.

Sonic Turd by Word Smith McGee May 23, 2014

Sonictard 

Kids who think Sonic hedgehog is unbeatable.They also seem to ignore any evidence showing Sonic is not unbeatable no matter how much you show them.

Sonictard:"Sonic is omnipotent!"
Non-Sonictard:"Lol,you're just a Sonictard!"

Sonictard by godzillamage December 23, 2014