Al3x

I would not recommend using glycerin with your biggest or near biggest toys if you are not used to the sensation and dosage, it can cause bleeding due to the extreme contractions it can induce around the toy. One could even start with just a few milliliters injected directly into the rectum after a not too groundbreaking toying session. Make sure to have a safe rounded attachment for a shower hose or prefilled enema bag to clean the rectum out after playing, as any lingering glycerin might cause diarrhea, dry intestinal contractions, irritation of the anal canal and anus and excessive mucus production. Playing in the shower or bathtub is best when starting with glycerin: I guarantee it will save you some cleaning and unnecessary discomfort.

I suppose one way to differentiate them for me would be that straining is a surface topical sensation that concentrates on the anal lips and veins, while pushing is a deeper, more muscular, abdominal sensation... Usually, straining doesn't necessitate any dilation work prior, while pushing requires the tissues and muscles of the guts and sphincters to be relaxed and stretched out.

Glycerin has a stronger effect while being less irritating and easier to inject in the rectum than soap. It is also almost as cheap. Diluting the glycerin up to 50% with water will make the effects much stronger. Adding water based lube will barely reduce the effects, while polymer lubes will almost nullify them.

If you are talking about prolonging the pushing contractions caused by soap, I can recommend a few milliliters of pure glycerin. One can also use glycerin with a wide and short anal plug, which will cause the rectum to bunch up and push against the obstruction in a very pleasurable and uncontrolable way. Diluting the glycerin up to 50% with water will double the strengh of the solution (counter-intuitive but true). After some minutes to an hour or two, the rectum will line itself with mucus to protect itself. Relubing or twisting the plug a few times will reset the effect. You will end up with a very sloppy and dilated hole and an extremely relaxed and floppy rectum. Please go progressively with glycerin and do not try to retain the solution past the first few contractions on your first tries, as the effect can be strong enough to cause the rectal lining to tear and bleed. Also, one should realize that the laxative effect can last for hours even after the glycerin has been rinced from the rectum. Lastly, glycerin can be diluted with water-based lubricant but is very weakened by polymer based lubricants such as j-lube, which can be of interest depending on the intensity one is looking to experience.

Thanks for the advise! Squatting, spreading the sphincters, and pushing does bring the largest rose i can produce, but no prolapse yet. Something hard to describe is the muscle groups I use when pushing, it's like going for a number two but also engaging higher muscles in the abdomen, almost to the diaphragm. Almost as if I was trying to shift the whole content of my abdominal cavity down. This muscle control allows me to feel a sort of "click" or "shift" of my rectal walls, going from a completely internal rose to a slightly protruding and nicely formed conical mass. I can then just feel it trying to unfold out of me, but no amount of pushing ever gets it to turn inside out...

I am in the exact same situation and am also interested in any advise...