I found a new moodlet called Downtrodden in the Sims 3 Late Night. You're probably meant to get it when someone dumps you,something like that. Anyway,my Sim got it after drinking a Spline Reticulator in The Prosper Room. The icon features a boot stepping on a heart and it causes a -25 drop for 2 hours. Also,my Sims dragged her feet,had her body slumped and had a sad expression on her face while she walked.
If anyone could confirm this moodlet,I'd be grateful!