Dry Louie
Often confused with his cousin Wet Willie, a Dry Louie is very much similar. Dry Louie's are a quick flip of the nostril, most commonly approached when the person receiving is unaware, usually done with the index finger.
When I went to give my fiancé a kiss goodbye before leaving for work, I noticed she was out cold in a deep sleep, it was a perfect time to give her a Dry Louie.