I once was asking my parents to pick up some batteries for something or other while they were at the supermarket, when I was about 13/14 and had a brain fart and said 'Durex' (a brand of condoms common to most of the world except most of America) instead of 'Duracell'.

A tough conversation followed.

My brain couldn't decide which word to use. I asked my mom when someone had moved into their condo/condominium, which came out as condom.