girl #1- oh nice shirt where'd you get it?  girl #2- oh i had to have firecourse with
to have sexual intercourse with an individual in the firefighter field in order to obtain a particular part of his firefighter apparel such as firefighter shorts, shirt, or hat
"girl #1- oh nice shirt where'd you get it?  girl #2- oh i had to have firecourse with" What is the definition of "firecourse"?