Four Funerals and a Wedding
Sally works at a mortuary. She falls in love with Clint, her co worker (boss?). They both get turned on reaffirming life by fucking in the office while the ceremony is on.
On the day in question, they have a busy schedule of four funerals. So they start with mutual masturbation, but don't have time to finish. During the second one, she blows Clint. During the third he returns the favour. during the fourth, they try to fuck, but again, don't finish.
That night is their wedding.... and they both arrive super horny.