They could on sims 2, why not on sims 3??? :P
Photofreak:
Yes, they can.
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It's not possible to woohoo on the Sims 3 for the DS.
Yes you can woohoo on sims for ds and dsi.
Get both sims to relax on a bed and select 'woohoo'.
Yes! You can do 'woohoo' on everything, except on the ds version!(stupid people...) Hope i could be of help! Except you can't woohoo on Sims 2 Castaway.
Get the sims to WOoHoo