"Grilling"

Does anyone remember "grilling"? It seemed to be popular in my Amino days back in 2019, but I haven't found any resources as of recently to use to grill myself with new 'types I am questioning... If anyone is familiar with the concept, could you leave some of those questions for me to read over and think about? 

If it is called something different now (or even previously), could you let me know what as well? So I can dig up more questions to sit on..