Translation:He cannot drink even a sip of beer.
As an Australian how can you question it? I thought Bob Hawke once held the world record for downing a yard of ale.
Isn't a gulp closer to a "gole"? Um gole is like One swallow, and comes from the sound it makes as you take one. A sip is a golinho (more like molhar a língua). I'm reporting that they should at least accept it as well, assuming "gulp" is an existing English word (I am a native Portuguese speaker, but I have an American here agreeing with me--but I am open to other opinions). =)