funny pregnancy announcement?

anyone know of any funny poems to announce a pregnancy? My husband and i have two children.  a 2.5 year old girl and an 8 month old girl.  I always wanted to have one more..but the hubby (during second pregnancy) said he was done..well after we had our second daughter, and realized how fun it was and how we loved how close they were, we decided to have another (family currently thinks we are done)  well that "another" came very quickly..and im about 6 weeks pregnant.  Does anyone know of any funny ways to announce a pregnancy..say on facebook? (that way we tell everyone at once). we are going to wait until im closer to 10-12 weeks (we announced the other two as soon as we found out).  Its going to be a pretty big shock..so i am wanting something really good! i have been googling htem..but havent found anything that great so far.