The Celtic striker had a short and sweet message for the midfielder.
Indeed, Griffiths was on his hat-trick when the Bhoys were rather fortuitously awarded a penalty for a foul that occurred outside the box.
The 24-year-old had netted twice after the half-time interval to give Celtic a commanding lead.
But the goalscorer wanted his second hat-trick in recent weeks and approached the Hoops' normal penalty taker Kris Commons with that simple message. Commons understood, he says, and allowed him the freedom to proceed - just as he had done with Anthony Stokes earlier this season.
Griffiths told reporters: "Kris Commons is the normal penalty taker but I said to him I was on my hat-trick so he handed me the ball.
"He is good like that. He did it with Anthony Stokes earlier in the season so I am happy he gave me it."
Griffiths proved the game changer against Dundee United, much like he did during the 4-1 win over Kilmarnock two weeks ago.
Celtic boss Ronny Deila, though, believes his side delivered one of their poorest halves of the season before the break.
The Bhoys put paid to that after half-time, though, and are now eight points clear of second-placed Aberdeen at the top of the Scottish Premiership once more. The title beckons.