Where Robert Crumb, the Bruegel of the bathroom, seems to stand (or sit, as the case may be) on the question of toilet
paper orientation.
[Top, left to right] “Let’s Get Outa Here!,” 1967, in The Complete Crumb Comics, vol. 4, 1989,
p. 42; “Mrs. Quiver,” Big Ass Comics #1, 1969; “Pete the
Plumber,” Your Hytone Comix, 1971; “Patricia
Pig in Patricia Stays at Home,” People’s
Comics, 1972. [Bottom, left to right] “John Q. Public in Sunday Afternoon,”
XYZ Comics, 1972; “Mr. Snoid in Once
I Led the Life of a Millionaire,” R.
Crumb’s Carload O’ Comics, 1976; Weirdo
#5, Spring 1982, cover; “Mode O’Day and Her Pals,” Weirdo #10, Summer 1984.
Addendum,
24 April 2020. R. Crumb
Sketchbook, volume 5, Dec. 1989-Jan. 1998 (Köln: Taschen, 2020), 93. “Good-bye cruel world,”
ca. 1990.
Addendum, 2 January 2021. I've been informed that this drawing by Crumb of himself in a toilet appeared in Mineshaft #39 (2020).