That is according to 2,000 people who took part in a poll by retiresavvy.co.uk.
The survey asked what age you should be when you stop doing things, from wearing leggings to getting tattoos.
It also found that 40 was considered a tad old to be sampling the party fun of Ibiza, although it was acceptable to wear a bikini on holiday until 46!
The age to give it up:
Most Popular
33 - Drive like a boy racer
34 - Take selfies
36 - Have a favourite boy band
36 - Use text talk
38 - Get a tattoo
38 - Have a belly button piercing
38 - Get drunk in public
39 - Listen to Radio One
39 - Wear a mini skirt
40 - Go on a lads/girls holiday
40 - Visit Ibiza
41 - Watch reality television
41 - Use so many hair products
42 - Wear a football shirt
43 - Wear leggings
43 - Buy the latest gadgets
44 - Go to a nightclub
45 - Go to a festival
46 - Have long hair
46 - Wear a bikini on holiday
47 - Use Twitter
47 - Wear skinny jeans
49 - Have a Facebook profile
49 - Wear trainers
52 - Stay out past midnight
53 - LinkedIn