Famously, from the definition of "drool-proof" (http://www.catb.org/jargon/html/D/drool-proof-paper.html http://www.catb.org/jargon/html/D/drool-proof-paper.htm

Famously, from the definition of "drool-proof" (http://www.catb.org/jargon/html/D/drool-proof-paper.html http://www.catb.org/jargon/html/D/drool-proof-paper.html): "Do not expose your LaserWriter to open fire or flame." The closest actual source I can find quickly is this printout from the LaserWriter II manual, which states (more reasonably) "Don't use devices that produce open flames, such as Bunsen burners or welding torches, near the LaserWriter II." (https://stuff.mit.edu/afs/sipb/user/sly/Laserwriter/0303215LWIINTNTX.PDF https://stuff.mit.edu/afs/sipb/user/sly/Laserwriter/0303215L...) [updated with more precise references]