Answer: wants to stop the boys from having fun at his expense
Explanation: The narrator hated that the other boys were so absorbed and interested in his proceedings with the shop girl. The narrator wished that the boys were in Jericho. The narrator told the shop girl that he will put the other glove on in the street, indicating that he wants to leave her shop to escape those boys, which will stop them from having fun at his expense.
I hope that this helps.