Johannes, a caller from Wellington, stumped the near-unstumpable CapeTalk presenter John Maytham with the following question:
Which household substance do all cement truck drivers carry with them at all times?
Maytham umm’ed and ahh’ed for a bit, before throwing in the towel.
We kid you not.
It prevents cement from ever setting, in case of an accident or anything that stops the mixer from revolving.
Listen to the question, the umm’s and ahh’s, and the bizarre answer in the audio below.
(Or, click here, if you're sceptical that this is true.)