Top definition
When TWO people creep on each others facebook pages constantly.

Includes straight liking one anothers pages and commenting on every post/picture/status dating back to the day they became facebook friends.
(:
Person 1: John is constantly straight liking Hillarys facebook.

Person 2: Yes, but Hillary comments on all his status updates.

Person 1: Oh so they are into the whole mutual creeping thing. Why don't they just exchange phone numbers?
by lookabutt January 23, 2011
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