Now be gneiss, guys…
----:D/
----///\\
That’s the best one yet.
Hi, I’m just back from Scotland where they have some sort of major collection of midges! Didn’t notice much in the way of gnats tho’.
Thanx muchly for your consideration, Colibri (et al), I take your point about important distinguishing marks but it’s awfully tricky for the average joe to catch a glimpse of a serial number on an individual arse, so to speak.
Seriously, thanx for taking some time on my behalf…
… and as every geologist knows schist is not quite gneiss!
Cheers all!
My guess is that gnats gnosh on gnocchi.
Some of these puns are truly gnauseating.
Oh, c’mon gr8guy, don’t be such a gnattering gnabob of gnegativity… 
sigh I’m going to regret this later, but…
Me? Gnegative? Gnever!