two meter rule

to help prevent the spread of the coronavirus the 2 meter rule was introduced: stay at least 2 meters apart from anybody

which is now commonly accepted, almost jokingly at times, when people greet you smiling, whilst simultaneously keeping their distance

man: pass me that drink
women: well i can't because my arm is less than two meters long, so i'd be breaking the two meter rule
man: oh common just pass me it ffs