I went to the pharmacy today, in front of me buying a man (looking 50 years old, quite strong, a small beard). The following is the dialogue between this man ("M") and the seller ("P"):

Q. Do you have a cough syrup? It would be delicious. (I smile at myself: “daughter or son takes”)

P (with the same guess, smiling) - and how old is the child?

M is forty six.