Take my advice . . .

Don't make "marshmallow treats" with Sugar Smacks(tm).
They are yucky.
Sugar Smacks(tm) are too soft and you don't get the same crunch.
Stick with crunchy cereals like Fruity Pebbles(tm) and Cocoa Crisps(tm).

Figjam is . . .

F*** I'm Good, Just Ask Me

Apparently it is Australian slang.
Who knew. I thought it was something you spread on toast.