A Noticeable Penis Line is the outline of a guys penis in pants (especially gray Sweatpants). The Noticeable Penis Line is usually there when a guy isn't erect and indicates weather or not he'd be good in bed. Also referred to as a NPL or Perpindickular Peen Scene.
You can give yourself a baby penis by:
grabbing a dog by the nipples (all 6), and proceed to shove the nipples in your ass well squeezing your rectum, this will make your dog lactate into your ass, this will act as lubricant for the next part
Next grab a baby, and shove it in your ass (head first) until it starts to come out the other end and get lodged in your penis
Then next time someone insults you by saying you have a baby penis, ejaculate the baby out to prove that they are literally correctly and thus your not offended by there insult
A Mississippi Penis Whistle involves a person blowing air through a "Prince Albert" piercing with no stud jewelry in it, producing a whistle-type noise.