in/on the legs
O gato de Tom ficou se esfregando nas pernas de Mary.
Tom's cat kept rubbing against Mary's legs.
Sami começou a tocar nas pernas de Layla.
Sami started touching Layla's legs.
My legs are hurting.
Eu tenho muito cabelo nas pernas.
I have a lot of hair on my legs.
No deus que o Nando tem nas pernas pra sair pra caminhar a qualquer custo.
Nando has so much energy in his legs that he’ll go out walking no matter what.
— A Sociedade da Neve (2023)