John Lloyd and Jo Brand are joined by entertaining experts and expert entertainers. With comedian Lucy Porter, etymologist Mark Forsyth and advertising creative legend Dave Trott.

This week, the Professor of Ignorance John Lloyd and his curator Jo Brand welcome the feel-good writer and comedian, Lucy Porter; the etymologist, self-proclaimed pedant and "Inky Fool" Mark Forsyth; and the lipsmackin' thirstquenchin' acetastin' motivatin' goodbuzzin' cooltalkin' highwalkin' fastlivin' evergivin' coolfizzin' advertising creative legend, Dave Trott.

This week, the Museum's Guest Committee stretch their minds over the subject of Lycra, revive an old word for a printer's day off; and explore the surprisingly recent cultural heritage of the Ploughman's Lunch.

The show was researched by Anne Miller of QI and Mike Turner.

The producers were Richard Turner and James Harkin.

The production coordinator was Sophie Richardson.

It was a BBC Studios Production.