@Hi contra ... and welcome.
Keep on keeping it positive, light and fluffy.
A little story. A few months ago I just decided I didn't want to go to the meeting so I just said to my wife "Bit of a sore throat I'll have one off."
Wife: "You going to listen on the phonelink?" (She knows I never do.)
Freddo: (Laughing) "No, I'm gonna watch the telly (TV) and sit by the fire."
Wife goes to meeting.
Next day is a lovely autumn day and I decide to get up early and get some work done in the garden. I'm just getting some work gear out of my car and up drives our Service Overseer from doing early morning trolley work with a young MS sat alongside.
S.O. winds down the window, grins at me and calls out "you don't look very unwell to me" (meaning I hadn't been at the meeting).
Freddo: "Why did you think I was unwell?"
S.O. "XXXX (my wife) said you weren't feeling too good."
Freddo: (Looking puzzled) "No ... I just wanted one off so I watched the telly, had a whisky and went to bed about ten o'clock so I could start work on the garden early as it's such a glorious day."
S.O. and MS (Fixed grins and not knowing what to say.)
Freddo: "Anyway, I'd better get to it - my jobs won't do themselves! Have a good one. 'Bye."
Don't explain yourself. Ever.