Rose-Sniff
When one pads there anus with their index finger, then sniffs said finger to see if they are clean and fresh for anal foreplay/intercourse.
I'm going to the bathroom to rose-sniff darling! I shan't be long!
Or...
Over trou darling! I haven't even rose-sniffed yet!
Or...
Over trou darling! I haven't even rose-sniffed yet!