When you're doing a girl on the top of the stairs doggy style and you randomly grab her arms and put them behind her back push your weight forward and ride her down the stairs on her nose causing it to become red and bloody from carpet burn.
Kenny gave Amanda the rudolph the other night and her nose is STILL red.
When a man has recently shaven his pubes and they have slightly grown back to a stubble, a women gives him a blow job and her nose rubs against the pricklies which results in a red nose. This can also go for a guy pleasuring a prickly female.
After a long night with Robby, Megan tried to tell her friends that she had a cold, but they all knew she was suffering from The Rudolph.