A metaphor referring to an entirely uninteresting and non-notable event.

beggars can't be choosers

(idiomatic) to live paycheck to paycheck, hand-to-mouth

(idiomatic) to bite the hand that feeds one

(idiomatic) it's a vicious circle, every solution leads to a dead end or creates new problems

absolutely certain; undoubtable

All's fair in love and war.

a friend in need is a friend indeed

one is treated the same way as one treats other people; your own treatment of people will fall back on you; what goes around comes around

those who do not think (especially those who forget an item) have to make a physical effort to deal with the consequences