i run into this problem all the time...got rid of one last week...
step 1 : go to bathroom call friend tell them to call u back in 5 minutes..flush toilet go back to bedroom
step 2: When phine rings answer and say "what? no way..you got o be joking..i cnt right now i got somone here....well i mean if you really need me to i guess i dont have a choice...ok gimme like 10 im on my way"
step 3 : tell the slut.."hey my friend just called and his car broke down on the "LIE" i need to go pick him up and take him back to hoboken"
step 4 : tell slut how much u enjoyed the time u spent and how ur gonna call her as soon as u get back"
step 5 : she leaves..grab tv remote, jump on couch and channell surf with a shit eating grin on your face
