Pepe and Cesc Fabregas were involved in a bizarre off-the-ball incident when Lionel Messi levelled the Clasico at 2-2 in the first half, prompting Joey Barton to pass judgement on the Portuguese's conduct.
Pepe, who has a reputation for play-acting and misconduct on the pitch, was taken to task on Twitter by the QPR midfielder.
Being aware of his own slightly less-than-perfect reputation, Barton did it with his tongue in cheek:
Pepe is a bigger nob than me on the pitch. (And that takes some doing) #ElClasico— Joseph Barton (@Joey7Barton) March 23, 2014