Nearly related to my post on advertising slogans, how about
Prick with a fork
Scholarly rigour obliges me to observe that this may have been concocted from an old line of the late great Humphrey Lyttleton on I’m sorry I haven’t a clue—its target then (yet more suitably) being Antony Worrall Thompson.
Strictly in the interests of gender equality, I believe the female version goes
Fluff with a wooden spoon
Again, take your pick—Nigella? or the numinous Fanny Cradock?
Cf. “May contain nuts”.