penny-assed

giving something so little effort that the words half-assed or quarter-assed don't do it justice, and only with the 1/100 denomination of the full effort (penny) can one comprehend the sheer lack of effort put in.

x: Dude has Edward done his part on the group final yet?
y: Yeah, he's done his part, but it was so penny-assed that we're gonna have to redo it.

Ass Penny

You know those pennies that are about 100 years old and looked like they were shoved up your ass? Yeah, those are these pennies.

Person: What type of penny is that?
Me: Oh this? This is an ass penny.