A Trump potshot is sort of the gray area between achievement award and participation trophy. Most people, but not everyone, gets one at some point.
He's tweeted at or about Trump almost constantly since the bronzed billionaire effectively secured the GOP nomination. Such undivided negative attention usually merits a Twitter response from @realDonaldTrump. Not for Losin' Bill Kristol.
Whether intentionally or not, Trump refuses to validate Kristol's tirade. It's gotten to the point now where it's so sad that it's funny.
Hair-splitting update: Trump @-messaged Kristol over the weekend, but continued ignoring Kristol's Twitter offensive:
At any rate, please enjoy: