UK usage
A small detonator, either used to trigger a larger explosion or to simulate gunfire in TV and films.
Term originate from the cornish word 'Shibd'.
The charge is in place, nowI just need to set the squibb and then we can blow the fucker.
Similar to 'nice' as in: I've got an A for my test.' 'Nice, man.' it can also be used to cover accidental physical contact as a random action with no real meaning behind it. This is supposed to make the situation less awkward
2: softly hitting someone, then pull through, uttering 'squibb'
A: Man, it's really hotoutside. Wanna go grab some ice cream?
B: Squibb.
2: *you get pushed from the side into a friend walking next to you*