Ok, so a guy is coming over to my house (for the first time)

[princealbertofb]

Bi-Boy, I wasn't really talking about anal bleeding as that shouldn't really happen, not if you are careful... I was just talking about things getting messed up in the house, if you are not completely compos mentes, ie your normal self. But if you think you can handle it and are used to it, there probably won't be any harm.
As far as being top and bottom, you two can switch and be one or the other, although it's not everyone's liking to be bottom or to do anal sex. Don't hesitate to say No if it's not your mood or your thing. You can always try again when and if you are ready.
It's perfectly Ok just to do mutual masturbation or have oral sex if you like that (who doesn't?), which you might find sufficient for a first time doing it with another guy. You shouldn't hesitate to ask your friend what he likes and doesn't like, as well as you should feel free to tell him what you find enjoyable and what you don't like. It's a question of daring to trust and daring to say how you feel and what you enjoy.
In answer to your question, yes, chemist shops should have lubricants like KY jelly or other stuff, if not a sex shop or maybe a GUM clinic might provide them.