Jack in the Box prepares for 4/20 with a little help from a strain of weed Seth Rogen He’s famous – but they don’t seem to run it by him… because he’s pissed off.

Seth fired Sunday after JITB published an ad earlier in the week promoting a new milkshake being rolled out ahead of the weedy Wednesday holiday… where they describe their drink as candidly as a Pineapple Express shake.

The ad also promotes their love of “trees”…and pricing them at $4.20. So, yeah, they’re all in for a joke talk – something the fast food chain has been trending hard in recent years.

Anyway, Seth responded to their digital ad, writing… “This has nothing to do with the movie Pineapple Express. We have nothing to do with this and weren’t asked if we wanted our movie to be linked to this.”

And he adds, “And obviously if we did a tie, we’d have to promote those weird diarrhea causing tacos that they sell.”

Of course, Seth is referring to his 2008 comedy classic of the same name – which (fun fact) actually stimulated the real-life weed strain…at least according to Seth and co. Apparently, he wasn’t around before they came with makeup buds… so they seem to be calling for it, at least colloquially.

On the legal end, it’s not clear if Seth has a registered trademark of “Pineapple Express” or is copyrighted. The fact that he’s not asking them to take out the ad is kind of telling – it must be personal if he really didn’t want the name associated with Jack in the Box, he invoked different verbiage.