Definition: absolutely sure/certain, with no doubt at all
Note: Some people say "beyond a shadow of a doubt."
ding: Are you sure? Are spring and summer still the BM here?
sr : Yes. Beyond the shadow of a doubt.
(two men are gossiping)
lwzhi : Is that ppmm really pregnant?
wharton: Beyond the shadow of a doubt. I heard it is over 3 months already.
