Peter Crouch has revealed that he once pranked Rafael Benitez by buying him Jose Mourinho's book.
Both Benitez and Mourinho have regularly clashed throughout their Premier League careers.
The Spaniard joined Liverpool in 2004, just a fortnight after Mourinho first took the reins at Chelsea.
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In 2005, the two were embroiled in controversy after a heated Champions League semi-final that featured a Luis Garcia goal that, according to Mourinho, did not cross the line.
"They didn't score in the semi-final - but I accept they beat us," he said at the time.