how to do woohoo in sims 3

like the post above you need to talk to here more.

here step by step from me: 1. talk, hug, or anything until you're become a friend 2. keep approach him/her until become good friend 3. and then flirt her/him until she/he blush or interested to you 4. go to bed then relax and call her/him 5. then flirt her/him again until "woohoo" show up good luck, sorry for my poor english

Eww thats not even what I thought it was...:( Well according to Sims wiki, you need to keep talking to this other Sim until they find you attractive and then the option to "woohoo" or "Try for baby" will appear.