Swallowing spiders while we sleep!!! Just shudder thinking about that one. I know I've swallowed flies & mozzies just by having my gob open at the wrong time. Never been aware of spiders. This reminds me of something I read once: If you spat into a glass all day long and then at the end of the day when the glass was full with saliva somebody told you to drink it down you would be revolted and probably vomit while trying to drink it. Yet we all swallow a couple of glasses of saliva every day and think nothing of it. Isn't life amazing?