I kind of miss my Sims attacking and throwing things at someone if they don't like that particular person. Perhaps in the mean/fight option, or even if the relationship is low enough with the Sim they don't like, they should have "Throw Object/Slap Using" and it would take you to a list of your inventory items. Select the item, and watch the person get knocked out with the item you selected. Or, go strait to your inventory select the item, and it will have an option "Read/Eat/etc. or Attack..." then gives you the pop up menu, along with the relationship with that Sim. So if Agnes is having a bad day, (because she's grumpy) she can go into her inventory, select her books, click on the book, and get the options: "Read/Reread" or "Throw Book at..." and takes her to the options "Blair Wainright, Thornton Wolff, Vita Alto, Molly French, Marty Keaton." Then, she selects the following Sim, and will throw the book at him/her. The relationship, of course will go down.
I hope the mean-spirited elderly Sims have the options to use their canes to beat other Sims up, with the Generations pack.