Hi
For my OU assignment I have to write a 1500 word story - the second assignment is to adapt the story to a drama script - this is background information.
When using dialogue (story or script) and I want to write spag bol as opposed to the longer version - as daft as it sounds, do I write it as spag bol or as one word?
My word doc doesn't like any version except the longer one and I want to keep my dialogue as contemporary as possible.
All help appreciated.
Annie
Hello again, we have to stop meeting like this or there'll be rumours.
I'm no expert, but I'd write it Spag. Bol. as they're both abbreviations.
I had some spag. bol. yesterday.
I'm sure some more learned poster will correct me if I'm wrong (which is likely). 
Hi Nil
You are so very kind. I'm a bit early with my assignment. It doesn't start until October but I'm itching to write.
It never dawned on me to use punctuation as you have shown - thank you.
I know this is a comedy site but I remembered Billwill many moons ago telling me that all scripts contain comedy and tragedy as does life itself. I've never forgotten that. Wise words indeed.
I hope that by the time the assignment is finished it will be of a comedic value.
Thank you once again.
Annie
Just to confuse you, I wouldn't bother with the punctuation - just put 'spag bol' - the full stops look a bit odd and break the flow.
You could always italicise it
"I had a lovely spag boll the other night..."
As to how you spell it....?
Hi Lazzard
Oh right - I would never have thought of italics.
Thank you for your suggestions much appreciated.
Annie
I wouldn't worry about any stops or italics. It's a regularly used term and, if it sounds natural in your dialogue, go for it. Tell your Word Processor to 'ignore' the term and carry on. There aren't many other slang terms that require an abbreviation stop. I'd say spag bol is exactly that...a slang term...like 'bra' or 'decaf', neither of which need a stop. I hope this makes sense.
Thank you Joyce
I will apply your suggestions. I use the term frequently and so does hubby.
I know I should ignore word or add the term to my dictionary but the red squiggles often intimidate, creating self doubt. Silly, I know.
Thank you for your help - it is much appreciated.
Annie 
I quickly typed it in to Google and it was written as "spag bol" on the BBC, The Telegraph and The Guardian. Admittedly the guys over at Private Eye would probably not recommend taking spelling advice from The Grauniad, but with the three of them using it you'll be OK.