British slang term for condom.

- Are most often made from latex, but some are made from other materials such as polyurethane, polyisoprene, or lamb intestine.

-Great for using as a water balloon

- Can be used for having a "posh wank".

- Can be used as a derogatory cuss - e.g. "Jesus Johnny-bags!"
- I've brought the Johnny-bags with me. Let's get it on baby!

- Jesus Johnny-bags! That really pissed me off.
by johnniebag April 29, 2010
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