Definition of joyrides:
(n) :
A ride in a vehicle taken solely for pleasure or enjoyment, especially a vehicle ride taken with no particular goal or purpose and just for the pleasure or enjoyment of a vehicle ride.
(n) :
An instance of driving a motor vehicle in a carefree or reckless manner, especially a vehicle which has been taken without the permission of the owner.
(n) :
(figurative) A very pleasant experience.
(v) :
(intransitive) To take a joyride.