Smallville Season 10 Episode 7 (Smallville s10e07) with title “Ambush” aired on Friday, November 5th 2010 at 08:00 pm via CW Network.
Here is summary for Smallville Season 10 Episode 7 :

The General and Lucy Lane decide to drop in on Lois and Clark for a surprise Thanksgiving dinner. Clark and the General get off to a rocky start after Lois’ father bashes the superheroes and tells Clark he is trying to pass a vigilante registration law.