Is it immature for a 36 year old to wear a tshirt with Earthworm Jim on it?

I have that shirt and whenever I wear it in public people who are around my age always tell me “cool shirt bro” and other positive feedbacks.

But sometimes I wonder what do people who say nothing really think
Is it immature for a 36 year old to wear a tshirt with Earthworm Jim on it?
Is it immature for a 36 year old to wear a tshirt with Earthworm Jim on it?
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