Grandma Martha used the term 'rubbering' to describe the act of eavesdropping. I always thought it was a peculiar term, but funny none the less :)
I was putting away the dishes and yes I was rubbering in on my children's' conversation. It went a little something like this...
Nadia: Aidan, do you like Santa?
Nadia: But do you know that Santa wiped boogers on my little babies
Aidan: (in a stick it to you tone) nuh-uhhhh
Nadia: Yes he did Aidan! He wiped boogers on my little baby doll's dress AND her pajamas!
Aidan: that is impossible
Nadia: (long pause, then in a quiet voice) I know he did
Aidan: Na-DEE-AHHH!!! He can't reach his boogers because of all that hair!