Comebacks to use on my boyfriend?

so my boyfriend and I always kid around. no big deal. it doesn't bother me. if you're going to say "you don't deserve that, dump him" don't even answer please. - anyways. so he goofs around about how I'm 2 years younger than him. he'll kid and say I'm only 14 to random people lol I'm 16. usually I just say no I'm not and laugh. what are some funny things to say when he does this?
Comebacks to use on my boyfriend?
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