By Erik Nelson and Duncan Hooper
British humour emerges from hibernation at the first sign of summer.
It's the hottest day of the year so far in much of the UK and (some) people are celebrating. In London, temperatures are expected to climb as high as 27° C today with similar conditions predicted tomorrow.
The outbreak of sunshine has been accompanied by a similar emergence of British humour. Here are some of the most popular Tweets on the subject.
