Are people needing to be more careful these days, and either not dropping them,

Or it is the cashless society which has spawned the phrase - ironically &/or mendaciously:

splash the cash or the alternative can't pay, won't pay

And one from my apprenticeship days when begging cigarettes - which were soooooo cool (?) crash the ash

And there is the electricity generating rush to phase out coal (other Trumpish policies are available) dash for gas