1. slang Arrogant and snobbish. I was already bored, but now that we have a snot-nosed tour guide, I'm leaving.Did you hear how judgmental he was about our choice of wine? What a snot-nosed jerk.
2. slang Young and inexperienced. I've been in this job 20 years, and now some snot-nosed kid right out of college is going to tell me what to do? No way!
blow snot rockets
and blow a snot rocket
tv. to blow gobs of nasal mucus from one nostril at a time by blocking off the other nostril with a thumb. Bob is always blowing snot rockets! How crude! He tried to blow a snot rocket at the dog, but it kept right on barking.