A request to sext, usually addressed to a girl by a boy who has no right to ask such a thing. Also the punchline of visual jokes on the internet, where you follow instructions to manipulate an image and end by viewing the words "SEND NUDES."
It means that you ask someone for their Snapchat and then tell them to send a pic of their ugly beautiful naked bobs with cheese.
NOTE: IF U YEET YOUR MEAT YOU A PUZZY WHO ACSEP DA FEET.