^ ^^ Same here - anal is wonderful - partly because it is complete submission of her body to me - but - to prevent the possibility of disease - it's the one place I wear a condom always. Which means finishing in my girl's mouth is "technically" ass to mouth - but the condom comes off before I part her lips with my cock. Scat in any form is definitely not my thing - and with the condom - I can enjoy the best of all worlds (ass and mouth - sometimes with a detour via the pussy) in safety and with out going where I have no intention of taking my girl.
And, as others have mentioned - I never use what we both find pleasurable as punishment. Doing so doesn't work for me.