Burst yer hole laughin'

exp.

To laugh uncontrollably.

In use

I asked yer wan in de butchers if she had pig's feet... she told me she did, so I said it was marvellous how she kept her stockings up, and she burst her hole laughin'

Let Lawrence Muck translate it to posh English for you
Lawrence Muck

Well, hello. Fancy meeting you here. Would you like me to translate 'Burst yer hole laughin'' in use for you?

I asked the lady in the butcher's whether she had pig's feet. She said she did, so I remarked how marvellous it was that she kept her stockings up, and she nearly expired with laughter.