McVitie's BN

"McVitie's Owl TV Advert - BN" This advert shows two children watching TV when their mother brings them some McVitie's BN biscuits and milk. When they open the package, owls come out and start the singing Mahna Mahna song made popular by The Muppets. Crunchy sandwich biscuits. McVitie's BN. The cheeky wink of McVitie's, sweet. (Lyrics) Mah na mah na Do doo dododo McVitie's BN Chocolate Flavour Sandwich Biscuits McVitie's Sweeet