Hester Prynne had to wear a red letter "A" for "adultery" (it was her sin).
Depends on the league. In the NFL a WR would not be able to wear the number 70, else the player is transferring from a Defensive Line position, and keeps the number (ala Devin Hester and #23). In the NCAA, it's possible, but numbers 70-79 are recommended for guards. It's possible to do so in HS because many of the jerseys are due to fit, albeit they have a similar numbering system for guards.
He wear it 34.
Devin by Aramis
hester prinn
33
#7
37
#34
A Scarlet Letter 'A'.
Ron Dayne wore number 33.
Josh Clausen