He did it in the Season 5 episode Chinga because Scully was away on vacation and he was bored.
Fox Mulder was created in 1993.
Scully tells Mulder that is pregnant in "Requiem",before Mulder's abduction she say that to him.
Fox Mulder often snacked on sunflower seeds.
The FBI
Mulder and Scully lost time in the pilot episode of The X-Files. It happens when they are driving on a road and the car dies. Years later Mulder finds himself in the same location.
I cannot belabour this enough; do not throw pencils at your fellow students.
Until I can't sharpen them anymore.
Gertrude Mulder's birth name is Gertruda Wilhelmina Maria Mulder.
scully nicknamed mulder "spooky"
Yes, if you throw a ball at the ceiling it bounces down
Throw it into a ceiling fan.
Leland E. Mulder died in 1993.
Fox Mulder was created in 1993.
Ineke Mulder was born in 1950.
Japie Mulder was born in 1969.
Tony Mulder was born in 1955.
Gerben Mulder was born in 1972.