[Astraeus]

So at 17, you can drive, at 18 you can drink, what can you do when you turn 21?

[Anotherlimey]

You can adopt a child

[metalhead72]

In some countries, become an adult

[mrapbp]

gamble and drink in the US.

[fortean]

You can stand for election at Parliamentary, European Parliamentary or local elections at 21.

[Gary D]

have a big party

[Lezman]

Drive a HGV?

[danmc_82]

You can be a year older

[Praxidike]

Have a 21st birthday.

[wormvortex]

get into a load of clubs that don't let under 21's in. Or finally become an adult if your American

[Miyazaki]

Originally Posted by Anotherlimey

You can adopt a child

Do you need a new mummy and daddy?

[shodan]

You can tell 20 year olds that you are older than them?

[OV3RCLOCK3R]

Cheaper Insurance

[eric pisch]

Originally Posted by Holy_Pilgrim

In some countries, become an adult

I thought that was 41 for men in the uk?

[Sonic67]

Originally Posted by mrapbp

gamble and drink in the US.

And while you are there - rent a car and get a hand gun. Why not combine the lot?