Just curious as to whether anyone has successfully achieved anal penetration (cock to anal canal) while the reciever is also holding in an enema. If so, can one recommend a suitable lubricant for this activity. The water will dissolve any water based lube; oil based seems too viscous.
I'm trying to achieve this without too much mess. Combination of schincter control and good lubrication; maybe silicone based?
Any ideas are helpful. Thanks in advance.