Obviously you're underage, the bouncer takes one look at you and points toward the exit.
Your buddy Roman leans over and says, "Sorry man, they look closely at anyone twenty-six or under. But there's a way to get past the bouncer, here you go."
Thanks to Roman, now you can enter the bar. What has he given you?
Update: A clue to help those who are stuck
Roman numerals 26 and under