slupati

1. colloq. (of a vehicle) to crash; to wreck
   Slupao je očev auto prvog dana. — He wrecked his dad's car on the first day.
   Slupali su se kolima na autoputu. — They crashed their car on the motorway.
2. colloq. to smash; to shatter
   U besu je slupao sve tanjire. — In a rage he smashed all the plates.

The reflexive slupati se means to crash, to have an accident.