lol. I thought it meant "cheap suit". :)
But the real giveaway, re: the song’s subject matter, is in the first verse: “Gazing at me, starry-eyed / In your Jehovah’s Witness suit.” Healy’s trademark outfit is, as The New Yorker described it, a “close-cut suit and a tie,” also a favorite amongst Jehovah’s Witnesses who seek to “reflect the values that we live by” and “show respect for our God.” Although Healy is not himself a Witness, he has, arguably, dressed like one.