Urban Dictionary so:
"Wankpuffin" is a term that trended on Twitter after composer Nick Harvey tweeted his shock that it was his mother's ISP username. The apparent melding of the British slang "wank," or masturbate, with "Puffin," a North Atlantic sea bird, the term was quickly adapted as a pejorative for wankers in general, most notably, Donald Trump.
Donald J. Trump: Boycott all Apple products until such time as Apple gives cell phone info to authorities regarding radical Islamic terrorist couple from Cal
Milk the Cow Podcast: You tweeted this from your iPhone you wankpuffin.
Und Google so: Yup.
Meanwhile: The Ku Klux Klan says it will hold a Trump victory parade in North Carolina. Oh boy.