Liked the controls. Some sort of additional cue as to your progress on a particular dick might be good to have, like maybe a subtle screen overlay.
The distortion effect is very neat and fun to play with, but can probably be dialed down by about 60%. I think that the cum particles should be a bit more detailed in a game that's all about collecting the stuff.
The music and sound effects are well picked.
Works quite nicely as a minigame, but needs just a bit more variety to keep the player's attention.