1. the time by which something must be finished, submitted, etc. 2. (formerly) a boundary around a military prison beyond which a prisoner could not venture without risk of being shot by the guards.
While it's important to talk with your doctor about the cause of your slurred speech, slurred speech caused by anxiety is not dangerous. It's not a sign that you have something else coming, or that your brain will somehow be inefficient for handling life tasks in the future.
Many times it will be slurred or skipped altogether. What you may have heard, I suspect, could be someone saying <'s it make sense>, which is a lazy way of saying <does it make sense>. But American people get so used to speaking this way, a lot of people do get confused. Another example is <could have> which is most of the time pronounced as <could've> or <coulda>.