The phrase “take a drag” typically refers to inhaling smoke from a cigarette, cigar, or other smoking device. When someone says they are going to “take a drag,” they mean they are going to take a puff or draw in smoke, allowing it to enter their lungs before exhaling.
In a broader context, “take a drag” can also be used metaphorically to describe taking a moment to breathe or pause, especially in a stressful or busy situation. However, the most common usage relates to smoking.
If you have a specific context in mind, please let me know, and I can provide a more tailored explanation!