Zildo: A dual insult for a person who is acting like a Dildo and is already a zilch, or perhaps if the person is normal and does something so pathetic that he/she should be immidiatly called a Zildo. The combination of a Zilch and a Dildo.
Horny fella”hey get my zildo out of your ass cheeks I want to use it
Step dad”sorry sport” (proceeds to pull zildo out of ass) “here you go”
Horny fella”thanks shitlips”