The cuticle that's always covered in mustard whenever you eat something with mustard on. Example: I was on a date and I started to make out with her and she noticed my huge musticle. I didn't even eat anything with mustard on it today. How'd it get there!?
MUSTICLE
Meaning of MUSTICLE in English
Slang English vocab. Английский сленговый словарь. 2012