I should really do some work this weekend but I can't be bothered.

我这个周末真该做点事了，可我懒得做。

《牛津词典》

I can't be bothered making a hot meal—it's too much like hard work.

我懒得做热饭热菜—太麻烦了。

《牛津词典》

I can't be bothered.

我才不管呢！

《新英汉大辞典》

Either way, I can't be bothered.

ENGADGET: This is the Modem World: E-Snooping on Our Loved Ones is Bad. Or is it?

This approach can equally be used to excuse yourself for sporting a Lanvin cocktail dress to the office, when you are merely showing off ("I have a party later and can't be bothered to change").

WSJ: Tina Gaudoin on Style: Don We Now Our Gay Apparel