Is it normal to feel that my nipples are trembling?

I'm a boy and I sleep shirtless. Yesterday when I was sleeping, I began to feel that my nipples were trembling. Today in the afternoon, they trembled again.

Voting Results
29% Normal
Based on 21 votes (6 yes)
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Comments ( 3 )
  • thefuckup

    Cancer.

    Comment Hidden ( show )
  • neonclam

    you're developing breasts

    Comment Hidden ( show )
  • Cymbalism

    Were you cold? Did you have a chilling thought?

    Comment Hidden ( show )