Don't bother with them, why make up excuses when the wife knows me far too well. Went to the LBS one day to buy a stem for my kid's bike, while I'm picking it out they get a call, its my wife to inform me I forgot my phone which is also my wallet, and did I need a CC number to pay for the stem. I had the shop guy tell her no, its only 5.00 and I've got enough, he seemed confused when she hung up laughing at that. Had to explain that she already knew there was no way the stem was 5.00 and she wasn't buying the BS. Ended up paying 50 as she expected. Same goes with rides, I just tell her I'm going and it'll be a while, we have a shared calendar, so she knows I'll be back when I need to be.