SIT-N-SPIN. BtVS Intertext/Allusion.
In "Becoming," Part 2, Angelus tortures Giles in order to learn how to bring Acathla back to life, and when his attempts are unsuccessful, he insults a wheelchair-bound Spike.
ANGELUS: You know, I can stop the pain. You've been very brave . . . but it's over. You've given enough. Now let me make it stop.
ANGELUS: Just tell me what I need to know.
GILES: In order . . . to be worthy . . .
GILES: You must perform the ritual . . . in a tutu. Pillock!
ANGELUS: All right. Someone get the chainsaw.
SPIKE: (in wheelchair) Now, now, don't let's lose our temper.
ANGELUS: Keep out of it, sit 'n' spin.
Sit-n-Spin is a Playskool toy for young children which allows young children to make themselves dizzy while spinning on a plastic seat mounted on a rotating base.
Photo from Amazon.com.