when guys hit on me

so I've decided that in the future when a guy flirts with me and my boyfriend isn't around instead of telling them I'm in a relationship, I'm just going to start picking my nose and watch them become uncomfortable. because honestly when I tell guys I have a boyfriend, sometimes they're like "we can keep it lowkey" like no I don't want to keep it lowkey, I don't want to talk to you I love my man thank you. but imagine trying to introduce yourself to someone and they just start picking their nose. personally, I think I'm a genius