The following are some sentences that describe cheating as cute:

You look like a naughty elf when you are cheating.

It’s really annoying and funny to be so cute when you’re being mean.

You are like a naughty little kitten that makes people want to pamper you.

Every time he plays tricks, he brings unexpected fun. He is such a cute little naughty guy.

Although you are acting shamelessly, your innocent look is really hard to make people angry.

You act like a child, making people laugh out loud.

Your naughty ways are simply uniquely cute and irresistible.