they should know this joke so that they know how com jb had a baby:
there were three guys in a cafe
1st man says: i must have the smallest head
2nd man says i must have the smallest arms
3rd man says i must have the smalles dick
they all went to check the guiness book of records
1st guy says yeh i was right
2nd guys said yeh i was right
3rd guy said : who the fucks justin bieber