How long do Lip tattoo last ??? ?

Please only answer if you actually have or if you specifically know someone with a lip tattoo.

How long did/has your lip tattoo last?
Update: My uncles has lasted 20 years so far.
Update 2: Lol to the people who say why would you get that. It's an inside joke thats been planned since i was in like 5th grade haha. I have "real" tattoos. This one is mainly a joke & its cheap so whatever.
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