Only because you already said "Don't be gay", I'll let the Dr. Dre 'balls in yo mouth' joke go...

If it's not hurting, it could just be dust or pollen from the air that got stuck in there. If you've coughed alot recently, it could also just be a piece of skin 'hangin'. Try gargling with water or mouthwash and see if that does anything to help. You probably don't have anything to worry about.