'Pfft!' ??
I also thought it was a brief expression of mild amusement. -- A short burst of air through pursed lips.
My life has been a lie
(
PedroHin Come along & ride on a Flantastic Voyage,
Fri 14 Oct 2016, 15:59,
archived)
Pfft!
(
Boris Johnson's Press Secretary,
Fri 14 Oct 2016, 16:00,
archived)
(
PedroHin Come along & ride on a Flantastic Voyage,
Fri 14 Oct 2016, 16:10,
archived)
ah mate, that's genius!
(
lustreboy making himself laugh since 1973 (tm),
Sat 15 Oct 2016, 13:02,
archived)
or in this case
the assisted release of methane from a distressed rectum
(distressed rectums being all the rage these days)
(
ozof,
Fri 14 Oct 2016, 23:07,
archived)