we're going away with inlaws for a few days, I generally check my phone / take dog for a quick walk / put nose in a book when he starts with homophobic / oppressive comments as my previous attempts to discuss rationally have ended in him becoming bullish (which is embarrassing at a family meal). Any suggestions for 'one-liners' I can have up my sleeve to try to quash his rants as I don't want it to spoil family trip!