Guest post by "Fairportfan" Puts me in mind of the Wapsi Square strip where Bud asked Jin (who knew she was slipping into schizophrenia and seeing things and people who weren't there - a worrying condition to friends who are aware that the slowly-slipping personage could literally blow out the Sun with a thought) how she knew what was real.
And Jin, with a complete poker face, reached out one finger and gently poked Bud in the boob...