Just after the hour, two goals in as many minutes offered the scoreline a more realistic look. A Sergio Reguilon corner was headed home by the commanding Pinnock before Mbeumo produced another memorable moment.
The striker fashioned a delightful half-volleyed cross to the far post where Lewis-Potter had only to stoop and nod it over the line.
Luton’s humiliation appeared complete after 86 minutes. Mbeumo surged forward and fed the tireless Vitaly Janelt, who rolled the ball across for substitute Kevin Schade to thump gleefully into an empty net.
Remarkably, the vast majority of Luton supporters still remained and sang. They drew the thinnest of rewards in injury-time when Luke Berry seized upon looseness in the Brentford defence to win the ball, round Mark Flekken and roll the ball home.
Luton fans still cheer team off
The final whistle brought not boos and jeers, but a rousing reception from the home fans as they applauded their team off the pitch even after witnessing such an embarrassing spectacle.
As humbling and damaging as the defeat was, it was an extraordinary display of unity to which Luton manager Rob Edwards offered his hand by way of apology as he walked around the Kenilworth Road pitch.
Edwards said: “I have got to say thank to the supporters who stuck with us. I know we have a lot of credit in the bank with what we have done, but I was apologising to them because today was not good enough.
“It was a really difficult day. As good as Brentford were, we were equally bad. We lacked an urgency and intensity in our defensive work that we hadn’t really lacked all season. And that’s the whole team.”
