Logic

Sam was eating a hot dog for lunch, while I had leftover steak:

Me:  Did you know that steak comes from cows?  I'm eating a cow right now!
Sam:  UH HUH.
Me:  And did you know that pork comes from pigs?  And bacon comes from pigs.  And hamburger comes from cows. 
Sam:  MM HMM.
Me:  And, of course, turkey comes from turkey and chicken comes from chicken.  And salmon is a type of fish.  Did you know that we eat fish?
Sam:  YES, AND HOT DOGS COME FROM DOGS!