last night my 'd' bil posted a vile picture of his wife (my sis) with her teeth blacked out, and looking all wrinkly. the caption underneath was "how could any man resist?" i don't think she's seen it. i am very upset. i think it's horrible. should i just laugh it off and see it as a joke? i dont understand it. he had an affair about a year ago but my sister doesn't know. she's quite an innocent. but i think she suspected and brushed it under the carpet.