Saturday, well, usually wake up around 7/8, have a bit of a lie in until 9, then hit the gym! When I'm back from the gym around 11ish, then have a coffee, catch up on TSR for a little bit, then I'll get any errands that I need doing like going to the post office etc...
Then after that, probably around 12/1ish (right about now), I start to get bored, and watch TV/play a game for the rest of the afternoon. Saturday's I say I probably have a few drinks around 3ish, usually a G&T (presuming I don't need to drive later), and that kind of takes me into the evening, where depending on financial situation, either order a pizza, or just not bother with supper as it's effort haha! Then just chill out, usually fairly tipsy when it gets to around 8 or 9, and I just then lie back and chill!