Jon Richardson gives us a tour of his teenage bedroom, Vicky Pattison performs her favourite 90s dance routines and Loyiso Gola reveals his past as an unsuccessful rapper. There are nerdy obsessions and shameful schooldays but who will be crowned most embarrassing?

Mel B, Jo Brand and Alex Jones compete to see who had the most embarrassing Christmas adoloescence, with one of the guest's mums showing up to dish the dirt on teen antics.

Rhod Gilbert is joined by Krishnan Guru-Murthy, Janine Harouni and Ignacio Lopez.

Rhod Gilbert is joined by David O'Doherty, Judy Murray and Sukh Ojla.

Rhod Gilbert is joined by Lucy Beaumont, Rickie Haywood-Williams and Lara Ricote.

Rhod Gilbert is joined by , all competing for the most mortifying teens. Al faces off with a tank expert and Kyrah's teacher cranks up the embarassment.

Emily Atack gets a surprise from her favourite boyband, Trevor Nelson recalls some dating mishaps and Sam Campbell reveals his rap battling past. There are outrageous house parties, mortifying obsessions and weird crushes, but who will be crowned the most embarrassing?

Susie Dent recalls a telepathic connection with a sporting icon, Layton Williams' friend dishes the dirt on his worst ever job interview and Dara O Briain nerds out over 80s computer games. There are cringey classroom antics, mortifying job interviews and nerdy hobbies, but who will be crowned most embarrassing?