The Inbetweeners (2012)

S1E11 Spa Time

Carly and the gang set up a car wash at school to raise some cash. Meanwhile, the boys decide to treat themselves to a day of pampering at the local spa, trading soap suds for cucumber slices and fluffy robes. As the girls scrub away, the guys discover that relaxation isn't as simple as it looks, leading to a series of awkward, hilarious mishaps that test their idea of a perfect spa day.