For Christmas, Jody and David sing out their 12 Days of Bad Boy Christmas... and it's very different from the original.

There's no let up in the disgusting subjects and today's is about how to spit when running.

Caution advised....

... it's a full-on gob and snotfest that you'll only find funny if you're a toddler or a Do-Badder.

If Jody and David have ANY listeners left after this, they'll be lucky....

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Or find us on twitter @UltrarunnerJody and @DavidHellard using #badboyrunning #12daysofbadboyxmas