Mocker flocker 

A mocker flocker is an abbreviation for “mother fucker”

Dude josh just tripped me hes a mocker flocker

Mocker flocker by leahgrace13 January 25, 2019

Mocker Focker 

A person who does something that they once fervently mocked you for doing.

Last week:
Steve: Dude -check out Angry birds, its so fun and addicting!
Jay: Phone game apps are so stupid -who has time for that crap?

This week:
Jay: I played Angry Birds last night till 2 AM!
Steve: You are such a mocker focker!

Mocker Focker by Steve Slacker September 8, 2011