The act of a gynaecologist sneezing upon the vagina of his patient.
Mr Pippin "Hello darling, how was you cervical smear test?"
Mrs Pippin "Luckily my front bum is in good working order, but I was subject to a strange experience"
Mr Pippin "What was that my dear?"
Mrs Pippin "My vaginal doctor sneezed upon my sensitive parts"
Mr Pippin "Ah Ha! a Gynosplurge"