A made up womens sexual organ used to trol other when they don't know what it means.
"Hey bro u got nossies?"
"Nah fam wtf r they?"
"wtf man u dont know what nossies r!"
"um nah... :S"
Nitrous oxide canisters that you inhale to get a high. Commonly referred to as whip its.
Let's do nossies when we get home