yoz things tat customer will ask? that i find it stupid....

2day a customer cum to me and ask me to brin a pair of sandals of his size but he nvr tell me wats his size he juz sae " Can u brin this pair of sandals in my size?" i ask him bck " wtas ur shoe size?" ended up he let me c his feet .... hw do i noe his size by looking he himself shld noe wat size he is wearing wat.... i had this kind of customers asking sae old questions kind u find it very funny i am not his wife nor parents hw do i noe wat size..... then got another ask me to bring a pair of puma shoe which he juz came to me and sae can i brin him a pair of puma shoe where the customer juz pointed at the puma shoe rack.... at the shoe rack there is 25 pairs of different shoes hw do i noe which 1 so i ask the customer which pair n i bring customer to the rack not he bring me leh.... is i bring the customer very funny rite .... hw come ppl are so stupid in buying their own personal things .... everyday wear 1 still dont dont wat size haha i can laugh sia......