My grandma told me it’s disrespectful and rude to sleep in just my boxers and no shirt. Is she overreacting?

She is visiting us right now and saw me come out of my bedroom in just my boxers to go the bathroom across the hall. I was half asleep. My morning wood had already gone down before I walked out of my room, so she never saw the tent in my boxers at least. Its not like I did it on purpose. Is she overreacting or am I really being disrespectful?
My grandma told me it’s disrespectful and rude to sleep in just my boxers and no shirt. Is she overreacting?
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