Nah dude, you don’t need a swimsuit, were all guys here.  Just strip down and jump in, the water feels great. 

You should, however, be aware of the rules of the house……The guy with the smallest cock has some additional tasks to take care of.  No, nothing major, the tasks are easy, you can even do them while hanging out on your knees or on your back.  The rest of the guys really do all of the work. 

Why, are you worried that you might not “measure up”? You should not feel ashamed, it’s natural, nothing you can control.  Not every guy is made to be a “real man”.