WATCH: Jen & Jim attempt to down a Guinness in three gulps

Seen as it's St Paddys and there's a feck (Fun fact: 'feck' is Irish for 'fuck') load of Guinness hanging around the office... Jen decided she'd skull one back in three gulps. 

She'd read that's how a proper Irishmen does it... And she roped Jim in, cause he had nothing better to do. 

Watch how that went for them in the video above.