No, you don't say "switch to Linux". This is an opportunity to be free from the shackles of being the go-to IT support person! If they say they are having computer problems, ask "Is it Linux? No? Sorry, can't help you"

To take it one step further, a drink that is quite popular where I like - carbonated water mixed with freshly squeezed lemon juice. Very refreshing in summer and I drink it all the time.

I'm not gonna say it's unhealthy, but I also would say that it's far from being healthy.