The One With The Lesbian Wedding - S2-E11
Corrected entry: In the party after the wedding Rachel's mom comes up to Rachel to talk. Well in one shot Rachel has her drink in her right hand right when her mom starts handing her drink to Rachel. Next shot Rachel has her drink in her left hand and takes her mom's in her right hand even though there's just no time to switch hands between those shots.
Correction: She is holding the glass in her right hand but her left hand is practically touching the glass making it very easy for her to switch hands. Even in slow motion this scene looks OK.
tw_stuart