glad to see you". Adams has also hinted that the tie may be displaying an aversion to him (one series of strips had Dogbert attempt to find out: he tries having Ratbert eat one of the ties, theorizes that it has an aversion to him, and eventually gives up after a discussion with the garbageman). Additionally, in Seven Years of Highly Defective People, Adams wrote: "Many readers asked me to allow Dilbert to lose his innocence with Liz, so to speak. But I didn't see any way I could do that in a comic strip and get it past the editors. So I developed a secret sign. I told the people who receive the Dilbert newsletter that if Dilbert ever got lucky with Liz, I would draw his normally upturned necktie flat one day." The flat-necktie strip was printed on August 9, 1994, in which Dogbert suspected that Dilbert had gotten lucky; ironically, the tie was shown flattened after Liz stated she did not believe in fornication (Dogbert wondered if Dilbert, who was acting oddly serene, had discovered religion; Dilbert said he "thought he was Unitarian"). In another strip, Dilbert met Antina, an overly masculine female coworker who caused his tie to flatten and point downward. On January 11, 2011, Dilbert was diagnosed with pon farr which caused an irresistible urge to mate. His tie was straight for the next two strips. Sometimes when Dilbert is surprised, scared, or has been beaten up, his tie goes straight. In the strip published October 13, 2014, Dilbert announced to Dogbert that his company had a new dress code, "Business Dorky". Dilbert's white shirt and striped tie were replaced with a red polo shirt and a badge on a lanyard. Subsequent strips published Monday through Saturday show all of the company employees wearing this same outfit, with the polo shirts varying in color between blue, green, yellow, red, orange, and purple. The Sunday strips continued to show the characters in their original outfits, until November 9, 2014. Relationship with other characters Dilbert lives with his pets, Dogbert and Ratbert, and the three dinosaurs Bob, Rex, and Dawn, in an unnamed American suburb, probably in Iowa Dilbert's mother appears once in a while in the comic and the animated series. She occasionally reveals herself to have surprisingly detailed knowledge about computer technology, further belittling Dilbert. Several fans have dubbed her "Dilmom", but she is