I like to make my own improvised nozzles. I've included three examples in this post.
(1) A very simple nozzle can be made from one of those vibrating butt plugs that have the little squeeze bulb to inject liquid. I just pulled the squeeze bulb off and inserted the rectal tip from my enema bag and voila, a vibrating enema nozzle.
It has a suction base so you can just sit on it, start the vibrations, start the enema flow and away you go. Incredible feeling. The combination of pressure from the enema, warmth from the water, and vibrations are enough to cause me to have a powerful ejaculation.
(2) This one requires some skill and power tools (Arrghh! Arrghh!). It requires an 18 inch double headed dildo. The idea is to drill a hole along its length. This works best if you first freeze the dildo overnight. I put mine between two pieces of wood and clamped the whole rig in a vise to keep it straight and stationary. Using a bit and a bit extender, carefull drill, with a variable speed drill set on low speed. You will have to drill from both ends to get all the way through. Buy a tubing nipple, such as the kind used to connect ice maker tubing or small diameter hoses together. Slop on silicone glue and glue it in the hole. You now have your very own 18 inch dildo enema nozzle.
I push mine up into me as far as it will reach while still maintaining good grip on the end, which is about 15 inches. I fuck the hell out of myself using extremely long strkes, varying the speed as I go, while the enema runs in. Sometimes I hang the bag low for an extended enema, other times I hang it very high for a quick and powerful rush of water. Again, the warmth, pressure, and motion of the dildo gives me an intense orgasm.
(3) Here is another simple one for those who do not want to spend the money on a "Shower Shot." Buy a bulb douche syringe. Get the blue one with the large curved and tapered rubber douche nozzle. Buy a hand held shower unit and install it on your shower. Anyone looking at your unit will see nothing more incriminating than a hand held shower. The nozzle has a large diameter opening at the base, which can be forced over the end of the shower hose with some lubricant and a little effort. Just remove the shower hose, don't lose the rubber washer, install the douche nozzle and you're ready to go.
The large curved rubber douche nozzle feels really great inside my rectum. I use the nozzle three diffferent ways.
(i)I turn the flow way up and grip down as hard as I can on the nozzle. I can only take about 16 to 24 ounces before the water comes spraying out around the nozzle. I do this over and over.
(ii)I force the entire nozzle up into my colon. I use plenty of lubricant because the nozzle has a wide ridge at its base. I point the curve forward towards my navel and insert it up into my colon, about 10 - 12 inches total length. I hold it in place with the hose and push out like I'm shitting. I get a continous flow of water through my colon and rectum. Sometimes I grip down until the pressure forces me to expel.
(iii)I turn the flow way down and take a large volume enema. Using a stop watch and measuring cup I adjust the flow to different amounts. Sometimes I adjust to a quart every 30 seconds, other times I adjust it to a quart every minute. At the slower quart per minute, I have successfully taken 4-1/2 quarts (4 minutes 30 seconds).
My fantasy is to build a strapon from an 18 inch dildo and find a dominatrix to fuck me while I take the enema. BTW, I am NOT gay, just intensely anal erotic.
I've had a hard-on the entire time I've been writing this post. I'm going to go take some enemas as soon as I sign off.