The discount supermarket chain promised followers on Twitter that they would drop the price of the luxury item based on the number of users interacting with a post advertising the £5.99 product.
The 33 per cent price drop comes thanks to more than 2,000 tweets and countless retweets.
Lidl is the first supermarket chain to try-out the unique scheme which attracted the attention of celebrities including TV presenters Denise Van Outen and Jeff Brazier.
Bosses are expecting a mad rush of shoppers looking to snap up the cheap treat when doors open at 7am on Saturday morning.
However, bargain-hunters are limited to buying just one lobster each.
Lidl spokeswoman Georgina Hall told the Mirror: “We’re incredibly excited about giving our customers the power on Twitter to lower the price of some of our finest festive products.
“Christmas is a very expensive time of year for shoppers up and down the country and our ambition is to put the control back into the hands of consumers, and save them even more in the run up to Christmas.”
On Monday, keen tweeters will have the chance to knock down the price of a £29.99 Serrano ham joint.
A mini-butter stollen which normally costs £1.99 could go for pennies when it joins the Twitter price-drop in two weeks’ time.
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