Wife/gf baiting you to respond:
"Hey honey, where did you get those/that new (insert mod here)?"
Top 10 responses (not necessarily in order):
#1: "Don't ask don't tell, baby (with a giant smile)"
#2: "What that, I've had that for months"
#3: "What are you talking about, it came like that"
#4: "Well honey it's just not safe without that"
#5: "Happy anniversary!"
#6: "Oh that was already there, I just painted it"
#7: "You see the aftermarket part was cheaper than the OEM part, and it was already damaged....."
#8: "I got it thru a special group buy on the 350Z-tech site, it was practically free"
#9: "Oh my god you should see how hot you look in the car now"
#10: "I love you sweetie?"
Ok, maybe that won't work.