While people can often be cranky before they've had their coffee, being uncaffeinated is still not an excuse to be rude to service workers.
In a viral TikTok, a pair of Starbucks employees joked about getting revenge on rude customers by giving them decaf. While their video may or may or not just be a bit, people in comments tried in with their own revenge tactics.
@jacobfincannon just kidding i would never #starbucks #greenscreen #tobeapartner #fyp #duet ♬ original sound - hehe
The comments are suspiciously specific. There are dozens of "errors" and substitutions that baristas can make.