But I do. I have yet to laugh, unless it was at a clients joke or in the appropriate course of conversation--sissification, domination, in particular.
Honestly the key to not laughing is to not be you. And please my fellow and wannabe PSOs, do not be you. It will fuck with your head if you remain yourself. Just like a doctor shuts off the part of themselves that has any emotion while they're with a patient, you must pack away your core essence when you hop on the horn.
It is acting. Nothing more and nothing less. I remember the moment I realized I was doing good at this. I sort of stepped out my body and caught myself in this moment where I was playing a silly teenage girl and teasing a guy with my panties. No longer was my faux youthful voice an effort, everything that came out her mouth was not anything I would ever say. I became my character. So if you can, and you will if you're good, become your character or characters for each call, not only do your calls go more smoothly, but become more believable for the client.
I also realized I was on a totally other plane of consciousness one night when I was in the middle of a heavy domination call and a family member decided to come get something out of my office. While I attempted to be in character, I lost my mojo and the call went to hell. I can't fathom how the phone sex pioneers who worked out of office boiler rooms managed to do their jobs. My room is my stage...it is not rare for me to go about my room while on a call, picking up items for a description, or to actually use them in a call. For instance, rummaging through my undies for a panty lover was a lot easier when I was actually doing it. I've caught myself, eyes closed, on my knees feigning the movements of fucking someone with a strap-on. It allowed me to not only be that character, but to bring her language to my lips.
So when the shift is over, my voice is sore and my ear is hot, I am back to myself. I unwind, and jot down in my journal some of the more bizzaro calls, laugh my ass off with my boyfriend, or just laugh all alone.