What is a good lie to tell my parents if I'm going on a date and dont want them to know?

I am 21 years old lol and I live with them but when it comes to dating they are on my ass so can you guys help me come up with a good lie ๐Ÿ˜‚

What is a good lie to tell my parents if I'm going on a date and dont want them to know?
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