Fluoride treatment anybody?

I will be the first to admit - going to the dentist is so-so.  It depends on what you're getting done.
Today I went to see my orthodontist who is also a dentist - and it was the "after getting braces removed and putting in the retainer" check up.  That was all fine and dandy and we discussed better cleaning habits as I am not the best at remembering to floss....ugh.  Anyway - that said and done, he offered to do a fluoride treatment.

I'm like "SURE!" Best to take some preventative measures towards cavities as I thought I had one - but turned out my gingivital measures (?) were my issue - not an actual cavity...so I must be doing something right.
Anyway - he gets his assistant to set up the fluoride treatment and it's more like a "leave-in conditioner."  He tells me I can eat after he spreads the fluoride on....BUT to not brush my teeth tonight.  I can brush my teeth tomorrow....it was a little sticky and kind of tasted like a sugary gum but not quite....
I am so disgusted.

In Canada - a fluoride treatment when I was a kid, consisted of picking your favourite flavour (mine was strawberry or banana....eventually mint) fluoride mousse and they stuffed your mouth with a top tray and bottom tray filled with this fluffy stuff and you had the suck-straw to help prevent gagging on the mousse.
I can't remember what they did when I got older - something not as long, messy or annoying...or as flavourful.
But I definitely recall brushing my teeth that night before bed time!!!!

Of course, didn't I completely forget (no I didn't brush yet it's only 9pm) - and EAT TWO CHOCOLATES?!?!?!