Loo, Restroom, Bathroom, Water Closet or WC, Ladies Room or Men's Room (depending on your gender), Little Boy's Room or Little Girl's Room, crapper, head, latrine.
You can also say:
"going to powder my nose,"
Some slang terms for arsonist are firebug, torch, and pyro.
Here are some slang terms for potatoes:SpudsTatersMurphyTots
fine
The slang terms I'm familiar with are: P.I. Private Eye, Peeper and Dick
No, "hopper" is not a slang term for a toilet. In some contexts, "hopper" can refer to a container used to hold materials in industrial settings, or to a device used in agriculture for spreading seeds or fertilizer.
Here are some examples:CarJalopyFlivverRide
Some slang terms for suicide include "offing oneself," "taking one's life," "dropping out," and "doing oneself in."
bucksgreenbacks bills
Fabu. or Fab.
shela
Angel dust
Hoops, bangs