You know Summer's just arrived when...

1) You're too hot in your jumper at school (but you can't take it off because to save time this morning, you only iron the collar and cuffs of your shirt).

2) Half the boys in your classes are sat with their jackets off and you're feeling jealous (see number 1)

3) You get home from work and your flat is hotter than it is outside for the first time in six months.

4) Your ten minutes post-school nap takes an hour.