перегнуть палку

overplay one's hand (Olga Okuneva); go too far (Ruth); run it into the ground (Anglophile); go overboard (segu); overshoot the mark (Anglophile); overstep the mark; spread it on thick; cut it too fat; take things too far (triumfov); take it too far (nastja_s); overdo (scherfas); overdo it (VLZ_58)

Игорь Миг

cross the line

амер.

push someone too far (в общении с кем-либо; I guess I pushed him too far, because he began shouting at me and threatening to hit me. Val_Ships)

идиом.

lay it on with a trowel (Andrey Truhachev); over-egg the pudding (Andrey Truhachev); go overboard (with • to do something too much, or to be too excited or eager about something: I don't think there'll be more than six people eating, so I wouldn't go overboard with the food. -- так что я не стал бы перегибать палку

cambridge.org ART Vancouver)

перен.

throw the baby out with the bath water (kirobite); enough is enough (Mikhail11)

посл.

make the cup run over (дословно: Наполнить чашу через край)