I'm from Barcelona

Five cultural brownie points if you recognise the source of this quote. Of course I'm not from Barcelona - and I can't cook a good paella. But I sometimes feel stupid (just like Barcelona made Man U look stupid a few weeks ago).
THe problem is that I really can't get my head around how you can send (or receive) e mails on a mobile phone. Internet is internet - mobiles are mobiles - I can cope with both - but how are the two linked? (It's a bit like trying to understand why gas companies can now provide telephone services).
I need a teenage son (daughter, niece or nephew) to explain this shit to me. And with the changes about to come I really need to work this out....