COCA-Cola isnt it when it comes to killing sperm.

New research shatters the belief that the popular drink works as an after-sex spermicide and the announcement is likely to make sex that bit boring.

Harvard Medical School researcher Deborah Anderson says theres no evidence to support the belief that the drinks acidity kills sperm.

Anderson says sperm is also likely to outswim the douche and get to the cervix first.

But of course the researchers evidently did not play ‘erupting volcano’ - a practice when you put the Coke in first.  During sex it it well-mixed and with the addition of sperm, well you know what a Coke spider with ice-cream is like….