The second penalty happens in every corner. instead of giving away a penalty, you stop play, and let them retake the corner. Giving a penalty, especially after you have already given one (the first was justified), is just pure dutch retardness. Football is a contact sport, and if you cant go into duel without falling down, barca should go for chess. Its not like Pique and puyol stop attackers by pure mind power....
And if the rulebook is so close to you, have a look at chelsea-barca 2009.