Workers at Asda, Tesco and Morrisons are being driven crazy by pranksters who rearrange the herb pots to spell out rude words.
In what has become a craze among Facebook users, Supermarket Scrabble players take advantage of the fact that stores emphasise the first letter of the herb in large font on the label.
The mischievous shoppers rearrange the pots to spell out offensive words, for instance taking two tubs of bay leaves, two of onion granules and a jar of sage to spell out 'BOOBS'.
A quick snap with a smartphone and the evidence is on Facebook before workers at the store have even realised what is going on.
The Facebook group claims that the aim is to brighten-up mundane trawls up and down the aisles.
'To make trips to the shops more fun, try arranging things on the shelves to make new, amusing and even rude words, images or sculptures,' it says.
Staff at UK stores are now frequently having to check the herb displays to see if someone has been messing with them.
But it is not only the herbs that have been targeted by pranksters, some have even got creative in the birthday cards aisle, rearranging those with prominent letters on the front.
Another prank the Facebook group promotes includes sneakily putting extra items into other shoppers' trolleys as they pass by, with 163 users having currently signed up to join in the fun.
More Rude herb Facebook crew terrorise supermarket aisles