NOUN
1. Someone who is not talented at cussing.
2. Someone who cusses uncontrollably and often.
3. Someone who botches dessert recipes involving dairy and egg yolk.
4. Someone who gets rejected by urban dictionary.
5. Alternatively, someone who gets accepted by urban dictionary (honorific: synonymous with cus-genius)
6. Derogatory: Someone who has no sense of humor.
Informal usage: That guy is a General Custard (akin to being a Major Asshole).
Ancient proverb: a custard's last stand is never a pretty sight to behold.