Just picture this. You are laying in bed, by yourself. You get turned on, and start jerking one out. You didn’t get any paper tissue, and don’t want to throw away a sock. As you are about to come, you decide you will come on yourself. Nothing too unpopular until this point. Now here is the dilemma. You can either try walking to the bathroom hoping none of it drips on the floor, or on the carpet, cover it up with your clothes leaving a sticky mess and stained clothes, or you can just pick it up and swallow it, leaving barely any residue. The third option is definitely the most convenient, and to be honest cum doesn’t taste as disgusting as people act as it does. You get used to the taste, and it is justifiable by the efficiency and convenience. Additionally, most guys seem to expect girls to swallow their cum, so I don’t think it should be a big deal to get rid of it by swallowing it yourself. tldr: pick it up, and swallow it. it’s that simple and now you don’t have any cum gooey-ness to deal with.