If you and your friends/family use words or phrases that only you know the meaning of, STOP BEING SO SELFISH!! Let everyone share your wisdom here and soon people from the other side of the world will be using it, if slightly mispronounced.
YFUWBRALSITE - For letters & emails above signature line: "Your Friend Until We Both Rot and Lie Stinking In The Earth." We adopted this 'complimentary close' as it's known in secretarial school, to replace sappy teenage-girl-at-graduation types who use "Your Friend Always" or "Besties for Life" and such. The same meaning but without sounding so cloyingly sentimental. When "Sincerely", "Very Truly Yours", "Best Regards," etc. isn't personal enough, use this option. Source: Adapted from a line in "The Exorcist" when asked how long the demon intends to possess the girl, this is the surly response
Netflix and Jill - Similar to "Netflix and Chill", but instead of having sex whilst watching Netflix, you're masturbating. Example: "My girlfriend was busy, so I kicked back and had a nice "Netflix and Jill" session."