Really bright stuff.

Not difficult, facile

easy; short for "light-work"

a lighter, matches, or a magnifying glass (when doing solars) used to light a cigar, cigarette, pipe, bowl, bong, binger, bubbler, joint, junt, blunt, or spliff

To blow up violently, usually through shooting.

short on cash, unable to pay one's way

Consists of photons, quanta of electromagnetic field