It has nothing to do with whether today is a tuesday or a saturday. Every table is different. Every table is exploitable in a different way. Granted, a Saturday table *tends* toward a certain play style but it is not ubiquitous by any means.

We all know the general rule -- if a table is tight passive, you're loose aggressive and vice-versa.

In theory you should never be able to label yourself a "lag" or a "tag" -- your label will switch depending on which one of your specific opponents is in the pot. If there is, for sake of an example a 20/5 in the pot, good time to be a LAG because villain will only play back with the nutz.