Some slang terms that refer to fat would include flab, lard, or poundage. If you are talking about a fat person, you might say chubby, pudgy, or flabby. Depending on which word you choose, you might be insulting or just teasing in a friendly manner. "He's a chubby fellow," would be a friendly way of saying someone is overweight. Saying "He's a lard-arse," would be an insult.
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
Here are some examples:CarJalopyFlivverRide
bucksgreenbacks bills
Fabu. or Fab.
Hoops, bangs
Angel dust
shela
Some slang terms for suicide include "offing oneself," "taking one's life," "dropping out," and "doing oneself in."
"Wimp" is a slang term. It means a weak, ineffectual person.