Caller: "wazza" or "bunny"

Received a text with an attachment on Xmas Day. Obviously I didn't open it without knowing who it was from, but in case a friend had changed their number: "Hi. Who is this?"
"My name is wazza who am I chatting with" Then their name changed to "My friends call me bunny"

Caller: Someone calling themselves "wazza" or "My friends call me bunny".

I received a text with an attachment on Xmas Day. Obviously I didn't open it, but in case it was someone I knew, who'd changed their number I texted back