Former President Donald Trump’s speech on the economy in North Carolina was highly notable and entertaining for one key reason, Washington Post columnist Catherine Rampell wrote on Wednesday in a post on X. Specifically, he was unable to stick to the actual topic of the speech — despite trying to commit to memory how important it was and audibly disagreeing with his decision to veer away. “Funniest part of Trump’s big ‘economy speech’ today was that he kept reminding himself aloud that he was supposed to be talking about the economy, but then immediately returned to rambling about tampons or S…