A fancy word for "shit" or "poop" or "crap".
King Henry VI excused himself from a royal dinner with the Pope to take a schlompticox.
Gargantuan ball sack; or a man with an enormous ball sack
Example One:
Juan: We're hittin' old papi mariposa's crib tonight. Who's in?
Jerryck: But Juan, papi mariposa is the baddest drug lord anywhere. We'll all be dead before we even get in the front door!
Jorge: He's right Juan, I don't wanna die...
Juan: Ay! Pinche pussies. Anyone with a fanche in this fucking room?
Example two:
Sam: Did you hear about Diego?
Kaleb: Nah, what happened?
Sam: He asked Cindy to prom...
Kaleb: Duuuude, what a fucking fanche! She's the hottest girl in school!