What Causes A Feel Of Having The Opening Of Penis Being Stuck Together?

Why do my penis hole get stuck together ? Every time I look are go to the bathroom I notice the hole on my penis have somthing usely stuck on it r it s stuck together I mean its not heard to re open it better yet it s not even like it s just permanently closed its just somthing usely be there everytime if not all the time it looks like it s the cotton from my shorts