In the first story "Rich In Russia" in Bech: A Book, John Updike writes:
(the mailbox, students should know, where his pitifully nibbled checks arrive has been well scarred by floating urban wrath, and his last name has been so often ballpointed by playful lobby-loiterers into a somewhat assonant verb that Bech has left the name plate space blank and depends upon the clairvoyance of mailmen)
What "somewhat assonant verb" did Updike have in mind?