Singapore Swap Edit Meaning

1.

to put your wristwatch and wedding ring on a girls hand while she gives you a hand job therefore looking like you are doing it; a way to get around cheating on your spouse.

wife: you promise you didn't cheat on me on your business trip?

husband: yes, I promise.

(next day at work, after story is told around the office)

husband: no I don't feel bad, thank God for the singapore swap!