if you just moved to the uk and left your glasses back un the usa and asked your dad to send them to you, it could happen that it takes him more than a year to send them. in that cases, you are so desperate and unable to see, that you start putting two hair ties on your eyes and calling them your glasses
gf: has your dad sent you your glasses yet?
bf: no but i got THESE glasses. *holds a hair tieon both of his eyes*