When Giles is injecting Buffy, he rolls up her sleeve so he can puncture her skin, but he never rolls it down. When Buffy leaves, you can see the sleeve is rolled back down, but neither one of them moved it.
EditS 7 : Ep 22
Aired 5/20/03
S 7 : Ep 21
Aired 5/13/03
S 7 : Ep 20
Aired 5/6/03
S 7 : Ep 19
Aired 4/29/03
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