You can't make something that's not naturally good great even with the hardest attempts.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

trying to "fix up" a junky car.it cannot be done, give it up!

to try to "fix up" an ugly car, or to try to turn a compact rice burner into a race car.

unconvincingly attempt to make an irreconcilably bad situation look good.

An attempt to conceal and/or strive to improve misfortunate genes.

We all know at the end of the day, you can't polish a turd.

Enough said...