Dumbest:
Once in a public talk I heard the speaker say that you get sunburnt more easily when you are in the mountains because you are closer to the sun.
Funniest:
In that shocker of a public talk "A godly view of sex and marriage" (always guaranteed to produce a few laughs) the PO of our congregation was warning us of the evils of masturbation and he told us that we needed to "get a firm grip on ourselves"!