A fork of Rural Dictionary
When picking your nose, you pick the left nostril, then you pick the right nostril (with the same finger), transferring a booger from one nostril to the other.
When picking my nose, I was Cross Pollinating and accidentally put a booger in my other nostril. Through Cross Pollination I accidentally put a booger from my left nostril into my right nostril.
When two or more people develop bronchitis or a cough around the same time.
My friend Tyrone and I both got bronchitis at the same time; we're bronchial buddies!