Message-bomb

When you are typing a message to someone (especially a long and meaningful one) and while you are typing it, they send you a message (usually a question) and you have to erase everything and change your entire message

Jake: So what happened last night? Did you tell Ella that you like her?
John: No, I was typing, and then she totally message-bombed me and asked me to tell her the answers to the homework so I never got the chance
Jake: hate it when that happens