Mondegreen time. I read Pachelbel and in my head I "heard" Patch your bell. And when I think of bells, the gargoyles know this (rudimentary telepathy, it's one of their lesser-known abilities).
Jeffrey thought I'd thought/thunk/said "cowbell" and his imagination ran riot over the Princess of the Cowbell (he has a massive crush).
So, when I hacked this together, he couldn't help himself.
@darcistrutt - this one's for you! He's been practising!