How do you drink sims on sims 2

1.You need to have sims 2 university.
2.You have to get a cow plant.
3.Then u get ur sim to be eaten by the cow plant. (I don't know how because I don't have it. :D)
4.Then like you have your other sim to be friendly wth the cow and drink the sim's (that the cow eaten) essence. (i didnt know what that means) ur welcome!