a humorous variation of the
phrase hook,
line and sinker, meaning completely, totally, entirely.
Hook,
line and sinker is often used in the
phrase to swallow something
hook,
line and sinker, as in to believe or accept completely and alludes to a
fish that swallows not only the baited
hook, but the sinker (a
weight for sinking a
fishing line or
net below the water's surface) and some of the
fishing line as well.