Watson was less impressed with the humour, saying the episode offered more of a knowing chuckle than an outright belly laugh.
Woollcott answered with a belly laugh.
In those days, the most familiar sound in staff rooms and on training courses was the belly laugh.
It's either a belly laugh or it's no go and no show.
The conjunction of belly laugh and basal emotion puts this on a par with the best in the series.
Inside the machine was a wide array of recorded chuckles, yocks and belly laughs; exactly 320 laughs on 32 tape loops, 10 to a loop.
But this episode filled my living room with belly laughs from start to finish.
He wrote that while it was a solid episode it lacks any of the belly laughs the show frequently elicits.