Wayne Rooney netted a hat-trick, including an incredible strike from inside his own half, as Everton thrashed David Moyes' West Ham 4-0 at Goodison Park while incoming boss Sam Allardyce watched on from the stands.
Captain-for-the-night Rooney produced the sublime long-range effort, bringing back memories of his famous goal against West Ham for Manchester United in 2014, to complete his treble in the 66th minute.
The 32-year-old's first goal of the evening came in the 18th minute as he headed in on the follow-up after his penalty was saved by Joe Hart, and he slotted home his second 10 minutes later.
Jordan Pickford saved Manuel Lanzini's spot-kick just before the hour mark, and after Rooney's outrageous effort from distance, Ashley Williams then added a header with 12 minutes of normal time to go.
It all made for a thoroughly miserable night for former Everton boss Moyes and a hugely satisfying one for Toffees caretaker manager David Unsworth, who celebrated only the second win of his temporary stint.
And Allardyce, sat alongside Everton's major shareholder Farhad Moshiri and chairman Bill Kenwright, will surely have taken great encouragement from what he saw hours after the club had announced he was to finalise terms on becoming their new manager.
The man who guided Sunderland and then Crystal Palace to safety in the past two seasons is set to be confirmed as Everton boss with the Merseyside outfit lying 13th in the Premier League, this victory having moved them up from 17th, and five points clear of the relegation zone.
West Ham remain 18th, are winless in seven league games and have taken one point from three so far under boss Moyes, who has now lost five out of five meetings with Everton since leaving them in 2013.
During the opening quarter of an hour of the contest things were fairly subdued both on and off the pitch, but that changed when Hart brought down Dominic Calvert-Lewin in the box and referee Michael Oliver pointed to the spot.
Rooney saw his attempt from 12 yards kept out by his former England team-mate Hart, but he reacted swiftly to nod the ball in.
Rooney then doubled the lead as he received the ball from Tom Davies' pass and calmly sent a strike into the net.
There were some nerves for Everton early in the second half, firstly when Aaron Cresswell cracked a shot against their crossbar and then when Williams' challenge on Diafra Sakho prompted Oliver to award another penalty.
But Pickford - who also saved a penalty last week against Atalanta - repeated the trick to deny Lanzini, and soon after Rooney sent Goodison into raptures as he scored his eighth goal of the season in spectacular fashion, meeting Hart's clearance inside the centre circle and sending the ball straight into the net.
Williams subsequently wrapped things up as he converted from Gylfi Sigurdsson's corner.