Stop it, Mr. President. You’re killin’ me!

You’re now trying to paint Joe Biden as some sort of squishy far-left, socialist-leaning, open-borders guy who will take our guns from us and appoint wacky loons to the federal judiciary.

Forgive the candor, Mr. President … but I think you’re off your rocker.

The first signs of the kind of campaign you are going to wage against the former vice president are coming into sharper focus now that the Republican National Convention has commenced.

I don’t listen to you when you speak on my TV. If I don’t turn the TV off I’ll mute the volume, given that you have nothing — not a single damn thing — to say that I want to hear.

However, the media report what you say and I do read media reports. They say you’re accusing Biden — an establishment Democrat if there ever was one — of adhering to some far-left idiocy.

I think of all the things you have accused Biden of supporting, I laugh the hardest at the open-borders assertion. Jumpin’ jiminy, Mr. POTUS, no reasonable American wants to throw open our borders. Indeed, the term “open borders” implies no enforcement of immigration laws, no intercepting of undocumented immigrants. Has the former VP ever said anything that suggests such nonsense? Umm. Let me think. No. He hasn’t.

Yet you keep yapping that he wants open borders. That he’s now a tool of the far left.

You seek to denigrate Biden the way you did to Hillary Clinton. The former vice president is trading on his decency, on his compassion, on the very virtues that you lack. That will be his staunchest defense against the scurrilous attacks you are going to launch against him.

So, I cannot wish you “luck” in your effort to defame a decent — and knowledgeable — political foe. I will turn away from you whenever you spout that nonsense and I intend fully to call attention to the lies you spew whenever they fly out of your mouth.

See you in the funny papers, Mr. President.