Nc'ed for this as it's obviously very outing. I'm a long standing Mumsnetter though. (Although if MN check I look fairly new as I had to get a new account due to getting locked out of the other one in the data breach issue 
.)
My child is in the local preschool and tomorrow we're doing a valentine's flower sale. We buy lots of flowers wholesale and then bunch them and sell them locally in the cafe and at the local shop. The proceeds go to the preschool.
I've done it for the last three years (even though dc wasn't even at the school one of these years) and am doing it again this year. I help to trim, bunch and price the flowers the night before.
Every year I'm asked to sell them the day of and every year I make up an excuse for why I can't.
I'm dyscalculic. I can't even add 7 to 4 without using my fingers. I have a complete mental block when it comes to even the most simple maths.
So for the first time this year I've told them this. Most of them have been very sympathetic but a couple of them have said I'm being ridiculous.
I've explained that I suffer HUGE social anxiety around buying and selling, even going on a bus (years ago) or to a shop. Restaurants and tipping before tip calculators were awful. Obviously I've forced myself to do these things because, well it's life.
One of them has said I just use a calculator and they don't see the problem. A: I'll feel like a fucking idiot using a calculator for a simple sum, I don't want the whole community to know, I know I shouldn't but I feel ashamed.
B: Using a calculator is still hard for me. If there are a few people waiting I'll get very flustered and upset.
The other one has said I need to 'suck it up and just do it. When will I even learn maths if I don't try?' I HAVE bloody tried. I do every day and have for 40 years! I've had many people (some of whom were specialists) try to 'teach' me or help me find different ways of thinking about it.
She also laughed and said 'that's ridiculous, it's a bit of a weird get out'.
Dh is going to sell in my place and so as a couple we're actually helping more than anyone else bar the organiser so it's not like we aren't pulling our weight.
Am I being unreasonable in not selling?
Am I being unreasonable in feeling upset by their reactions? I know they'll tell other people and I feel really embarrassed now (even though I know I shouldn't.)
I feel like I've always tried to hide it and now I've finally been honest to some people it's being ridiculed.