Yea, it's called a buffer. Most regularly updating web comics have one. In addition to keeping your readers happy, it also allows you to work on your comic whenever you feel like it, without feeling pressured to meet a deadline.
so wait, if, like, a girl invites you for tea this is what she means? I mean, is it like an official phrase used between lesbians or something? If so, I shall start inviting girls for some tea myself, ho ho!