... going commando feels normal
... you arrive somewhere to realise you have left your underwear at home (again)
... you have to explain why you have more than 1 bike
... you have to decide which of your 2 bikes you are taking on holiday and which one stays at home simply because you can only get 4 bikes in the car, not all 6 (OH is a cyclist as well - I tried the I'll take my 3 which 1 do you want approach - didn't work.
... people look at you strangely when you explain it only takes 30 mins longer to cycle the 25 miles than it does to drive it
... you don't care you look like a drowned rat, you had a great ride