A couple of days ago, my husband showed me this one:
I read it, and I loved the fact that the alien on the table said "yes" to "too much or ok" as it captures the fact that massage is both painful and pleasurable, but I didn't get the third panel. I asked my husband what it meant and he had no idea, so he said, "Maybe it means Hurt me the way they do in Canada."
It took about ten minutes for me to stop laughing, but now that's part of our lexicon. "Would you like me to hurt your back the way they do in Canada?"
(It's Swedish massage, by the way.)