In the 1998 film 'The Parent Trap,' twin sisters Annie and Hallie, played by Lindsay Lohan, meet for the first time at summer camp. Their iconic handshake signifies their bond and the beginning of a hilarious and heartwarming adventure as they scheme to reunite their long-lost parents. This scene became instantly memorable, embodying themes of sibling connection and mischievous collaboration, which resonate with many viewers. The 'Parent Trap Handshake' has since evolved into a popular meme, often used to depict agreements, alliances, or clever plans among friends or individuals. Memers frequently employ this clip to humorously illustrate the excitement surrounding shared secrets or inside jokes, amplifying the film's nostalgic charm while appealing to a younger audience in the digital age.