To straighten hair(usually african american or some version thereof's) hair using extreme heat. The heat source is usually an iron comb that has been heated over an open flame. Yes, it is as dangerous and damaging as it sounds...Can result in 3rd degree burns to the scalp and/or neck,depending on how experinced the presser is.
Girl, I need to get big mama to press my hair before the weekend!!
Why??!! You just gone sweat it back nappy again humping all weekend long...slut