Whatever it's called, the stuff looks fantastic seeping out of the slit. Sometimes you don't even realize it's happening. You're walking around the bedroom, trying to find your clothes that you threw everywhere in the heat of passion, and you feel something drip on your foot.
You look down and see a trail of aftercum from your cock to your foot and maybe running down your leg. If you ooze a lot after you cum like I do, you know you should keep a rag handy to wipe up before you wander around. Sometimes, though, you just can't be neat.