I'm really sad that is the attitude of someone engaged in educating young people. Your disdain for those students really shines through in your comments... ha ha ha ha !
There, that's disdain!
In a classroom that laughter gets swallowed; a patient tone is chosen, discarded and a normal speaking tone selected; facial expresion checked for neutrality, if 'interested' cannot be achieved and, having double checked all of those, your sanity, the expresion on the student who asked face, the expressions on all other student faces you calmly give a reasoned and informative response.
All the time you are looking for the other studetns to make a move - the 'daft question asker' must be protected against the mirth of its classmates too!
Back of your mind you are triple/quadruple checking everything above, just in case something slips through and student tells parents who demand you are sacked!
Example of a daft question? OK... but beware, many other posters may add their own favourites: A lesson about the double circulatory system, basic session, just name the blood vessels capillary to capillary, GCSE/ A Level recap: venules, veins, etc all the way through to arterioles.
20 minutes in, diagrams done and dusted; details added according to what they can remember, almost finished collating their data on the white board before moving on to gaseous diffusion and Bingo! a hand goes up don't rise to it, they have been told often enough, just catch my eye and ask "Miss" no... don't go there "Is it OK if I colour the veins in purple, my blue pen doesn't work?"
And start at the very beginning... swallow the giggle, check your face....
These were 19/20 year olds, at the start of a degree in physiology!
Tell me why that isn't a daft question and how YOU would have hidden your mirth?