"youre not my husband tonight" rule for the evening, the freedom is unreal

this might sound silly but my wife and i have a rule we use sometimes, basically for the whole evening at a club or private, im "not her husband" and shes "not my wife"... we're just two ppl who came in separately and might or might not leave together. no married couple language, no inside jokes, no acting like a unit. its weirdly freeing? like we're forced to actually charm each other again and she ends up flirting w other ppl while i watch like a stranger would. anyone else have a "rule for the evening" theyve set themselves? curious what other little frameworks ppl use to keep things fresh after years together...