"Mallard duck"
...And it had nothing to do with the "gratuitous duck pic" thread (which is, in fact, what that thread title says).
Reminds me of a Hawkeye comic panel that was posted here awhile ago. I initially thought it was meant for a more mature audience than most superhero comics, until I realised that the titular character was being addressed as "CLINT".Noble La*ia.
The actual thread has an "m" in the title. My brain filled in a "b".