well, we're on no-call list too.
but, sometimes i like to have fun.
once at a friend's house, the two of us improvved on the spot. my friend picked up the phone, and they asked for his dad. his dad was sleeping, but he said, "one second, i'll go get him..."
then he handed the phone to me, and i started talking jibberish, with a fake middle-easter accent. then i said in normal english, "here he is now..."
my friend started talking, "hello. sorry, that was my uncle...have a nice day," and he hung it up.
i've been meaning to do this for a while (saw it on Seinfeld, great show btw):
telemarketer calls.
i pick up, tell them its not a good time.
they say it'll be quick or whatever...
i ask them for their home phone #, and say i'll call them at a better time.
they say "i don't want to talk when i'm at home."
then i say, "now you know how it feels."