How long does it take to get to 100 percent effaced if your already at 50 percent?

Since there is no standard measurement for degree of effacement, there is no way to answer the question accurately.

However, if you are referring to being drunk, drunkenness progresses faster the more you drink, because your body falls behind in its efforts to clear the alcohol from your system.

For example, the body can clear one standard drink (roughly one 12-ounce American beer) per hour. If you drink five beers in five hours, you will not be drunk at all at the end of the hour after you finish the beer.

If, however, you drink the 5 beers in three hours, you are likely to exceed the legal limit to drive, and drinking them over a 1-hour period guarantees you will be drunk, whether you believe you are or not.