Neil Patrick Harris pulled a Mariah Carey "I don't know her" with Rachel Bloom, and things got awkward real fast. While live-tweeting about the Tony Awards [1] on Sunday night, the Tony Award-winning actor threw some serious shade at the Crazy Ex-Girlfriend [2] star, who was serving as the show's backstage host ahead of commercial breaks. "Who is the woman in the top hat backstage at @TheTonyAwards? Gideon remarked that she says 'like' and 'oh my god' a lot," he said referring to his 7-year-old son [3]. "I'm confused . . ."

Who is the woman in the top hat backstage at @TheTonyAwards [4]? Gideon remarked that she says 'like' and 'oh my god' a lot. I'm confused...

— Neil Patrick Harris (@ActuallyNPH) June 11, 2018 [5]

It didn't take long for Rachel to respond, adding that they have indeed met "numerous times" before. "I'm a big fan of yours," she said. "We've met numerous times and my husband, Dan Gregor, wrote for How I Met Your Mother for 5 years. Notably, he wrote the episode where your character finally meets his father." Neil later tried to backpedal [6] by replying, "Indeed! Well said. Thanks for the reminder. How was backstage?" While the exchange was cringeworthy to say the least, we have to admit that Rachel's clap back was nothing short of legen — wait for it — dary!

I'm a big fan of yours. We've met numerous times and my husband, Dan Gregor, wrote for "How I Met Your Mother" for 5 years. Notably, he wrote the episode where your character finally meets his father.

— Rachel Bloom (@Racheldoesstuff) June 11, 2018 [7]