I'm interested in the following scenario. I leave my door unlocked. Depending on whether you want to suck or be sucked:
You come into my living room, get on your knees and wait for me to come in and supply my cock. You suck, you let me know where and how you want to take my load. Once we are both satisfied, you leave.
We can both suck if you'd prefer or I can just suck you.