One of Endora's thought balloons (saying 'Yes') was mistakenly shown coming from Tabitha's mind.
While Spike is being spun around in the air in Tabitha's kitchen, his shirt is completely open. After he is released and gets on his feet, two buttons are fastened, when there was absolutely no chance for him to have fastened them himself.
Ethan Winthrop: It's that huge?
He/She: Huge. Oh, you mean Theresa's secret. That's a whopper, too.
Ethan Winthrop: You know if you're interested in me there are better ways to of showing it than drugging me, stripping me down and slapping me around. Although you might want to try Rebecca Hotchkiss, she might love it.
He/She: Shut up! This is no joke. I've had my eye on you for some time.
Ethan Winthrop: Oh yeah, which one? Your guy eye or your girl eye?
He/She: We love with our hearts and minds, Ethan. Our bodies merely follow.
Spike (being tortured in Tabitha's basement): Oh God please, please, help me!
Tabitha Lenox: He used the G-word. He's really in for it.
Tabitha: Why did you super-size yourself?
The phrase 'super-size' was originally coined by the McDonald's fast food franchise, used to increase the size of your food order for a small fee.