ise smart sex when you have been drinking, and, in fact, alcohol is a major barrier to practising smart sex. Drinking can impair judgment so that the drinker thinks "What the hell--just once won't hurt." But having sex without a condom just once is like bungy jumping without a bungy cord just once.It's advisable to avoid having sex when you've had a lot to drink, because even if you have the presence of mind to use a condom, you'll be much less likely to use it correctly and therefore face a high risk of condom failure. ...