What kind of an idiot would deny global warming just because it’s cold out?
I’d link to our own Philip Bump’s article on how to talk to dipshits like this, but frankly I’m not optimistic about how effective it would be in this case. You’d probably have to quit dealing with this human hair clog by the last sentence of item No. 1 (“ask them if they know how to make ice in a freezer. If they say no, just drop the whole thing”). Congratulations to Donald Trump for once again out-dumbing the most idiotic straw man we could come up with.