<P> Mac has little relationship with The Waitress outside of trying to sleep with her in order to upset Charlie, on account of Charlie smashing one of Mac's "Project Badass" tapes . This is later revealed to be untrue, as the tape Charlie was smashing was actually Frank and The Waitress' sex tape that Charlie mistakenly watched . Mac and The Waitress actually have only engaged in "hand stuff ." </P> <P> The Waitress sleeps with Frank in order to make Dennis jealous of her . She does this under the guidance of Dee, who is being instructed by Charlie, in order to get The Waitress (through a convoluted plan) to like him . Unbeknownst to anyone for a long time after, Frank records their sex . His toupée falls off during their love - making session . </P> <P> Many fans interpreted the seventh season's two - part finale, "High School Reunion," as an indirect reveal of The Waitress' real name . In the episode, The Gang attends their high school reunion and Frank, feeling left out, decides to go with them . Since there is no name tag for him, Frank takes the name tag of Nikki Potnick . Later on, The Waitress shows up drunk and complaining that there was no tag with her name on it at the table, seemingly implying that Frank took her name tag and that she is Nikki Potnick . However, Glenn Howerton (who plays Dennis on the show and is also a writer and executive producer), debunked this theory, explaining that the situation was a further joke about no one knowing The Waitresses name, as well as a call - back to the first season episode "Underage Drinking: A National Concern ." </P>

Name of the waitress on it's always sunny
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