If I’m remembering correctly, this phrase was immortalized in a Primus track at one point. There’s a weird, short track (or maybe an intro to a longer song?) on “Sailing the Seas of Cheese” that’s just one guy singing along with running water, and as I remember them, the lyrics are: “As I stand here in the shower, singing opera and such/pondering the possibility that I pull the pud too much/there’s a scent that fills the air; is it flatus? just a touch/and it makes me think of you.”
Which apparently is still in my brain, even though I didn’t think I’ve listened to that album since the 90’s. My brain is weirdly prone to storing old audio, though.
Wasn’t the phrase supposed to be “Primus sucks”? I seem to remember that being a self-identification thing for fans back in the day.