How to have woohoo on sims 2?

How do you have woohoo? My sims are in love and they have slept together in the love bed and nothing!

haha I play this game like EVERY day.
and my sims have already had a baby now.
and it grew into a toddler today.
okay.
so you get a double bed.
and you click on the bed and click relax.
make them both relax on the bed.
then be incontrol of one sim and click on the other one and try to cuddle with it or if woohoo comes up click woohoo.
you can also woohoo in the hot tub.
if you have anymore questions just get at me.

They are scared to because you're watching them? privacy please!

You can also woohoo in a car... I never knew that until it popped up on the screen!

Hmm, what kind of SIM 2? Cellphone, PS 2 or GBA or DS ?

You just get them on the double bed, then click woohoo. It's simple as that! Plus, if it's for pregnancy, do 'try for baby'.

buy a double bed. your sims must have a very high relationship. have them cuddle then select try for baby. I luv this game and play like every day almost. if anyone cares my acount on tha website is theswimmer10.

Thx krissykrunk's answer~
really help ^_^