2 walks up to 3 and says. hey 3 have you met my friend square root of -1. 3 says no two he isint real and walks off.
pi walks up to square root of -1 and says "get real to" which square root of -1 replies, "hey, be rational".
neutron walks into a bar and asks barman how much 4 a drink. barman replies "for you, no charge"
