Great thread!
#AF93D0 (or something like that) Having your smoker friend say he tried e-cigs (no name cig-a-likes with weak vapor that tastes much like a wet dog smells) and that "e-cigs just don't work for me."... regardless of how many questions you've answered and how much advice you have given.
#AF93D1... Hating no name disposable cig-a-likes with a passion and then realizing you know *every single* convenience store that sells them locally, just in case of an emergency
#AF93D2... Wondering why makers of ALL expensive APVs haven't figured out how to drill two extra holes for a lanyard/safety tether system yet.

(edit: for that matter why don't all the starter kits include a lanyard? I know at least two newbies that gave up and went back to analogs after either loosing their PV or dropping & breaking it!)
#AF93D3... Buying the latest, greatest and most expensive thing thinking that now that you have the "best" the extra expense is going to save you money in the long run... only to have the latest and greatest trumped by a similar item with some new feature the next week at half the cost.
#AF93D4... Having a special shelf in the closet just for steeping juice and storing extra gear and ending up with bottles and accessories scattered all over the room by the end of the day anyway.
#AF93D5... Having another friend tell you he wants to quit smoking but will only try an e-cig if it looks, tastes, works, and costs exactly like a real cigarette.
#AF93D6... E-cig "missionaries" that tell everyone that exhaled vapor doesn't have a smell, that no one is affected by "second hand vapor" (a nice lady I know, that lets me vape in her restaurant, is *highly* sensitive to PG, even in second hand vapor), and talk about the e-cig habit as if it costs *nothing* in day to day usage.
#AF93D7... Businesses and offices that *used to allow vaping* but had to stop because some militant e-cig n00bs had absolutely no sense of etiquette!
#AF93D8... Slyly getting wife into "advanced vaping" so you can justify upgrades by handing down your old gear to her... and then realizing that somehow your orders of new stuff have just doubled...
