Homophobe! Ultra-conservative con-artist! Filthy MRA! Do we really want to listen to this scum! (What, ad hominem? I would never )
I found a few that are applicable here: http://www.radiotimes.com/news/2016-02-13/these-hilarious-star-wars-gifs-imagine-kylo-rens-difficult-teenage-years
For those moments when you feel your opponent is just drawing at straws. Or maybe when they are totally out of evidence to back up their position.