The 52-year-old said: “Oh my God, it’s hilarious, it’s tomato saucy.
“I was doing quality checks on the tomatoes and picked that one up, and I just absolutely cracked up.
“I just fell about laughing when I saw it.
“I showed a colleague of mine, she did the same.
“It’s brilliant, I love it.
“I have got a really good sense of humour and I like slapstick and that was really up my street, so I thought ‘I have got to let everybody see it’.
“I keep making up these silly things like ‘Now I know where cherry tomatoes come from’ and ‘Now I know what our tomatoes get up to in the night when the store’s closed’.”
Maxine, of Harrow, north west London, has been working at the store near her home in Pinner for seven years.
She said: “I made the decision myself, it couldn’t be sold like that.
“I don’t think anyone would sell it but I showed a few colleagues and also my boss who thought it was hilarious too.”
She added: “Everyone I show it too is just cracking up and their hand goes to their mouth in embarrassment.
“I took it off display and brought it home and put it in the freezer to preserve it because I have to keep it, I just love it.”
Maxine has vowed to never eat the tomato because it’s “too sweet and cute”.
She added: “I have got a really good sense of humour and I like slapstick and that was really up my street, so I thought ‘I have got to let everybody see it’.”