Chuck Todd on MSNBC was describing Democratic strategist worries about certain voter registration numbers. This is a congruent conflation of “knock your socks off” and “set (one) back on (one’s) heels” , both meaning to put one in a state of surprise. A big thanks to Bruce Ryan for hearing this one and sending it in!
This one was uttered by J.C. Watts on the MTP (Meet the Press) Daily show on MSNBC. It is a nice mash up of “crazy as a loon” (insane) and “phony (or queer) as a three dollar bill” (bogus). http://www.zajilspeed.com/2017/08/african-american-republicans-tried-to.html
I suppose a three dollar bill is pretty crazy, but those loons definitely are the craziest. Of course, pileated woodpeckers sound daffy as well. A big thanks to Chief Malaphor Hunter (CMH) Mike Kovacs for hearing this one and immediately recording it.