A Pillow Beaver not to be confused with Pillow Biter, is typically a mammal of the human variety. He/She will gather all of the pillows to their side of a sleeping area creating a dam like effect. This Dam prohibits the calm waters of natural sleep to wash over any other mammals in said sleeping area. They do this unintentionally for it is intrinsic in their nature, thus a Pillow Beaver.
Adam: Dude I'm spent I crashed over at CougarDana's last night. I woke up at like 4am my neck was killing me, I look over and she has like nine pillows on her side of the bed. I slept like dagg' shit.
A girl/boy that makes their day better then it has to be.
Sometimes this includes jumping into pools filled with donuts, or testical eating. In rare cases some WhatsApp beavers can text until the veins and blood from under ther nails pop out and stain white colored carpet. Use windex to clean the stain. Some beavers will eat their hair, but use spicey ranch bbq sauce with basil. This calls them while the forth through their yodunfrusy's.
Stop it mackenzie your starting to eat pigs ear like a "WhatsApp beaver."
It's ok veronica I like chocolate nostrils, but only on cold days.