Inventor in a swimsuit

"Oh boy! What did I get myself into..." she mumbled.

Only it came in Walter's gruff manly voice. That was because the blonde woman actually was Walter!
"Dad, that's the wrong question! It should have been whom did you get yourself into!" Peter's voice chimed in.
It came from the booth which he was handling.

"Well son, thank god this random woman had a great figure in a swimsuit! Also thanks for helping me picking this one!" Walter replied.

"It was a pleasure, Dad..." Peter said and remembered the bizarre scene in the clothing store a few hours earlier...