twins

OK this guy came home from work and his wife ran out of the house to greet him very excited, jumping up and down screaming. He didnt know what she was so excited about but he started jumping up and down with her. He asked her what was so exciting, and she yells shes pregnant. They had been trying for awhile so he is very excited too. She says wait... theres more...and hes thinking what could be better than that? The wife says she is pregnant with twins. He asks her how she knows that because she just found out and she says..I bought a twin pack of pregnancy tests at walmart and they were both postive.