Henry Pond had no fun Had a face like a currant bun This adolescent little fella Was nicknamed by his friends "Old Yella" The doctors gave him creams and lotions To try to sooth the boys emotions But all in vain; the acne stayed Henry's hopes began to fade Then, when just about to crack He found another cream - Medac When Henry in the mirror peered His pimples all had disappeared Henry laughed and yelled "I got 'em! Me face is like a baby's bottom"
https://primoaccordo.net/who/medac.htm