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Southampton stood witness as they were easily swept aside as Harry Kane surpassed Alan Shearer for most goals in a calendar year.
Kane scored a hat-trick for a second match running whilst Dele Alli and Son Heung-min added tallies for Tottenham after the break in a 5-2 win at Wembley Stadium.
Sofiane Boufal and Dusan Tadic each netted consolations goal for Southampton, whose slide continues without answer.
Mauricio Pellegrino made four changes to the team which drew against Huddersfield, and that extended Shane Long’s goal scoring drought further.
Tottenham were in control from the start with Kane coming inches wide from tucking in Christian Eriksen’s cross at the near post following a Southampton defensive error.
Eric Dier then drew a save from distance as Southampton was pressed deeper into their own half with no escape.
Kane, however, grabbed the opener on 22 minutes when he was left unmarked from two-yards out to head in from Eriksen’s free kick to break a tie with Shearer.
The forward made it 2-0 before half-time tapping in at the back post from Son’s simple pass across goal.
Mario Lemina struck the post as Southampton looked to claw their way back into the game, before Long broke in on goal only to see his attempt saved.
Those misses would be paid in full as Dele Alli and Son scored two minutes apart to make it 4-0 to the hosts.
Sofiane Boufal pulled one back for the visitors with a left-footed shot, but Kane secured his hat trick to add more Boxing Day misery for Southampton.
Tottenham: Lloris, Aurier, Sanchez, Vertonghen, Rose, Dier, Dembele (Sissoko 54), Eriksen, Dele (Winks 84), Son (Lamela 76), Kane.
Unused subs: Vorm (GK), Trippier, Davies, Llorente.
Goals: Dele Alli (49), Son (51), Kane (22, 39, 67).
Bookings: None.
Southampton: Forster, Targett (McQueen 77), Hoedt, Yoshida, Stephens, Lemina (Gabbiadini 63), Romeu, Redmond (Tadic 63), Hojbjerg, Boufal, Long.
Unused subs: McCarthy (GK), Pied, Davis, Ward-Prowse.
Goals: Boufal (64).
Bookings: Hojbjerg (21).