Could you "install" a variety of "buttons," or whatever the heck they're called, in order to express the kind of laugh your toons elicit?You know... chortle/chuckle, guffaw, paroxysm, giggle, tearful, mucousy. This one was a 'silent shaker.'
maybe if I add eye rolling, you SUCK!, and WTF to the list it might work
Of course it would also have to include my personal goal - the load painful groan.
Doh! Wrong groan - clearly I was aiming for loud...