[Sundae]

Never heard of the beer reference either.
And it would take a very long time for another meaning to take hold and for it to stop making me giggle.

I still grin at the memory of some of the phonics sessions, where the teacher, trying to make up words would not have quite the same vocabulary as the other TA and me. She dismissed Mook as a made up word, which was just worth a shrug. And then Quim. At which point I had to go into the corner for a little while to recover my composure. Hearing a class of six year olds sounding it out was priceless. No-one mentioned it afterwards, she wasn't known for her happy-go-lucky demeanour.