Tottenham reacted to Chelsea's strong performance earlier in the day with a fine display of their own to beat Arsenal in the last ever north London derby to be played at White Hart Lane.Two goals in three minutes from the hosts during the second half dealt the killer blow to Arsene Wenger's men and piled more pressure onto the Frenchman.Dele Alli grabbed the first when he reacted quickest to a loose ball inside the Arsenal box after Petr Cech had made a fine save.Shortly after and the Spurs fans were celebrating again when Harry Kane converted a penalty as a result of being tripped by Gabriel.Arsenal just could not find a response and were it not for a string of brilliant interventions from Cech, the scoreline could have been far more embarrassing for the Gunners.Tottenham should have actually taken the lead in the first half, with both Alli and Christian Eriksen guilty of missing golden chances.Eriksen had one particular opportunity where he hit a right-footed volley from close range and grazed the top of the bar.At half-time, Sky Sports pundits Thierry Henry and Frank Lampard were discussing the incident when disaster struck for the ex-Arsenal hero.Henry was trying to recall a similar miss he had seen from someone in the past when his mind went totally blank and he couldn't remember the player's name.It turned into an impromptu guessing game, with Henry giving out clues to Lampard and presenter David Jones to help him out - see the video below."Oh I've forgot the name of the player," Henry said."West Ham, come on, French guy, scoring goals."Even with those vague clues, Jones incredibly guessed right with Dimitri Payet - much to Henry's relief.It was a bit embarrassing for Henry but made for hilarious television. Here's how Twitter reacted: