strange marks

This isn't a joke but its funny. You see my oldest sister just had her second son who is now around 2 months old and her oldest son is 11 years old. Well I was baby sitting the babe and when i was playing with him i noticed the weirdest red mark on his belly...well i queastioned my mother who asked my oldest sister what the mark was and just happened that his older brother had been blowing rasberrys and kisses on the kiss stomach...that cracked me up!