Overheard: "So there's crunchy coffee, but there's not normal coffee. You have to use your lips as a filter."
Step 1) take beans and chew
Step 2) pour boiling water into mouth
Step 3) gargle and swish around thoroughly
Step 4) spit out water into cup, using lips as filter
Optional[lifehack]) use a $10 capitalist-engineered carafe system with non-ecofriendly materials to automate the process in minutes.