Daytime excuses - You have an appointment to get ready for with (Dentist, Doctor, GUM Clinic, accountant, bank manager, Boss from real life job) or make up a part time college class your doing (flower arranging, spanish, quantum physics!!! careful with this one) Or just say you have another client coming over you need to get ready for. Or the plumber/gas man/electrician is due round.
Night time excuses - Meeting friends for late drinks/supper, you work in a night club you have to start working late, you need to get up at stupid o'clock for a job interview, your flat mate is coming home.
Just a few i rattled off from the top of my head... something tells me im going to be better at the secretive side of this job than i first anticipated!!!!
L.x