She keeps mowing in circles, in a pretty cabinet

The story:

this is actually my partner Gregg... my friend and I were singing the song acapella, Gregg joined in, we heard his rendition, asked him to repeat it then we were in hysterics! he said he knew they weren't actually singing 'mowing in circles' but until he could figure out what they were singing, he'd sing that instead! r..i..g..h..t...!!