Yes,
Use the tube package some cigars are sealed into. Melt your C-nut oil and nearly fill the cigar tube. Put it in the freezer and it becomes a bolus with a nice round tip. Sound good? it does not want to come out, because of the vacuum behind it within the tube.
Better to cut off 4 fingers together, from a big, heavy, unlined rubber glove. Wash them out with soap and water. Use a big coffee cup to hold them up-right, fill the series of fingers with your C-nut oil and freeze them till hard.
Then when you want one or more 🙄 just squeeze one out, squat a little bit and put that goodness to work.
Or just melt some and use a bulb shooter to squirt it up. (Warning: WARM Oil,, not over 105 Fahrenheit) For regular enema players, the bolus works better, as the liquid stuff is hard to control and wants to all come out, non stop.
It will not harden inside you, unless you think to play with very cold water. And the extra nice thing about C-nut, it is not absorbed, like most any of the thin oils. Castor bean oil is good n sticky does not leak as much as melted C-nut, but will not harden like C-nut. Get quality oil, for quality results.