Why does cloth from my underwear stick to my penis and balls?

Embarrassing as hell, since even though I might have washed recently, when my girlfriend takes my dick out of my pants, it looks like pieces of dirt... disgusting... even though it's just lint, and she knows I was 2x a day and change my undies daily?

What to do? Going commando isn't an option
Should I just wrap my dick in saran wrap?
Why does cloth from my underwear stick to my penis and balls?
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