My definition is kissing, oral and sex. I always explain to guys that anal isnt part of a full service (IMO).

I provide DFK, OWO and covered sex

To me as I'm a GFE provider, full service is kissing,cuddling,massage,owo,ro and protected vaginal.

Anal is not a service I provide

There are two different questions being answered here - ' full service' was and has always been a specific euphemism for penetrative vaginal sex, and goes back to the newspaper ad/card in newsagents window days. There are no 'different interpretations' of it; if somebody called and asked whether you did 'full service', that is what they meant. Like Paris, I still say it on the phone although it's less commonly asked nowadays.

A full service, can mean whatever anybody likes, as we're seeing on the thread alongside people's views on what other terms like 'GFE' mean (in other words, the services they offer) .

Thanks to Discreet Lady's brilliant thread I have now officially changed by definition to penetrative vag sex only. Bring out the trumpets!!
Any other activities are extra or have to be negotiated eg some clients want only BJ so I can substitute that for sex. But they won't automatically get sex-bj combo for the same price. I feel born again!

Amen to that Ms Dynamite! 

When I worked, full service meant kissing (unless the guy had rotting teeth and halitosis that made you wretch).  It meant foreplay, fingering ,oral both ways and provided the guy was clean and I was horny enough licking balls and arse. In short a horny time. 
All services meant anal sex and that was the difference.  Having said that I did hear that some girls who advertised that told they guy he was too big.

In all cases the guy had to be clean or it was not happening. Nothing is ever set in stone is it