Neither one knows how to whistle!
Iron know.
I've been really stressed out lately, I know it's not your fault, but please stop cracking jokes about me
Fish and ships.
In one you don't want to jerk the hook, but in the other you don't want to hook the jerk.
Psycho-paths. (as told by one of my coworkers)
Attire
Chimney Cricket!
Because dogs can't whistle. (X-post from r/dadjokes)