When someone is not even worthy of kissing your ass they may be invited to sniff your hoop as that is the closest they are going to get.
Can also be a hand gesture while driving for example: making a "hoop" with thumb and forefinger tips together brought up tip the nasal cavity and a healthy deep breath.
"Ach, sniff my hoop ya useless wee bawbag"
by Spytfyre November 18, 2018
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