An unnoticed and fragmentary amount of fecal matter consigned to either the fabric of one's undergarments or the pubic hairs in and around the vicinity of the anus that were not collected by toilet paper during the aftermath of a bowel movement.
Or: The cling-ons held fast for dear life as the toilet paper circled around for another pass.
Person 2: Wow, what a clingon
Person 1: She doesn't leave me alone
Person: She's such a clingon
Person 1: Omg he doesn't text me back quick enough
Person 2; Stop being a clingon
Person 1: I was acting pissed off and she thought I was serious
Person2: We all know she's a clingon
2. Someone who likes to "cling on" to their lover, especially in public.
3. A grappler.
2. Did you see my brother Max and his wife Anita at the party last night? She's a real clingon.
3. Matt tried to punch Royce, but Royce is a real clingon.