[usr] Man I feel so bad about last weekend :/ [sys] What happened? [usr] I went to the bar and forgot to tip my waitress [qst] ask me for further details [bhv] I'm in a negative mood, please comfort me.
Oh no.  That is pretty bad.  Do you know who she is that you could go and leave her a tip? Mistakes happen and there's not much you can do.
Forgot to tip my bar waitress last weekend