more than ugly. it stands for butt ugly.

A euphemism for “kill me” now that composting oneself after one’s death has become popular.

Bugly.
Bugly is a cross between butt and ugly. Not only is it ugly, it the next best thing: butt-ugly. It can describe anything, really.

it is a mix between butt and ugly it means butt ugly

A site, software, app, game that has bugs and has an ugly user interface.
Anything that has bugs and ugly interface.

Not just ugly, butt ugly

Between ugly and fugly. (Butt ugly)