Ever seen someone on TV, and can't for the life of you place where you know them from? That niggly feeling is one of the most irritating sensations ever – not to mention, it kind of makes you feel like you're getting old/losing your memory/both.

The Vodafone Comedy Festival takes place July 28th - 31st in Dublin's Iveagh Gardens and is jam packed with some of the best comedians in the world. If you're lucky enough to see this talent in action you do not want to be elbowing your other half muttering "where do I know him from? wasn't he on the toilet roll ad?". Firstly because it's rude. Secondly and more importantly, if you're spotted, you may be mistaken as a heckler and be absolutely torn apart by a world class piss taker. 

So be safe, educate yourself.