I have become a regular siphon system planner. I like being able to throw the container away at will. This means I use a "Higginson" pump to prime the flow and work with all the variables. By taking the flap out of the delivery end of the pump, I have to squeeze the bulb and kink the delivery hose. Then releasing the bulb, it draws solution from my jug, and brings it into flow. I like to leave a little air in the line which will give a sloshing sound and sensation with further squeezing of the bulb. Since there is no flap in the bottom of the bulb and only one working valve in the top, the bulb gives more of a washing action inside the body.
Now with that little bit of air in there, music is almost played as solution is worked both ways through the tip inside your butt. Then for the kicker! the primer bulb itself can be a sensory element by the noise made inside it in two ways. When the jug completely empties and the bulb is a foot or more above the body, it will give that fine, "Finished!" sucking sound many wait for, signalling your loaded arse, it has just drank in the whole thing! But wait, even while your happy session is progressing, by allowing air to half fill the primer bulb, it will give off a trickling sound as your drink dribbles into it. So then, If you can disassemble the delivery (not the suction) valve and remove the flap, put it into a small baggie for safe keeping. (I have removed both the flap and flap retainer from my bulb's sending end valve fitting.) Then these extra sounds are more easily obtained.