Pietro: *Runs around Avengers tower and stops in front of Nat* beep beep *Runs away giggling*
Nat: *confused then realizes* wha— OH!!!
-3 days later-
Pietro: *runs and knocks out bad guy* BEEP BEEP!!
Natasha: *Laughing hysterically while choking out bad guy*
Other Avengers: Umm what...?