Watch her vid. SHE CAN'T DANCE. She even had a bed to hold on to during her standing moves for christ's sakes and she still couldn't manage. This was in no way a Burg reference. Burg is as immune to cripple jokes as Donny Long is to working.
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"What I do know is that if Karen Carpenter and Mama Cass Elliot had shared that sandwich they'd both be alive today." -Michael K