Used casually among friends, not in professional or formal settings.

Informal Usage

Might suggest modesty; actual number of drinks may be more.

Understated Count

The phrase doesn't specify the exact number, it could vary greatly.

This sense of the phrase is not about drinking, but about quantity in different situations.

Indicates a person has had some experience with what they are discussing.

Can mean someone has made several attempts at something without specifying success.