Verb
(sports) To feel the burning sensation arising in a muscle being intensely exercised; often used as an exhortation to extend oneself in physical exercise.
(sex) To feel the vaginal or anal pleasure or burn felt during sexual intercourse.
Source: en.wiktionary.orgI like to feel the burn of the audience's eyes when I'm whispering all my darkest secrets into the microphone. Conor Oberst