Transgender advocate Chaz Bono was caught with his pants down Thursday and RadarOnline.com has the photos.

Careful not to reveal too much, Chaz unbuttoned his pants to tuck in his smart blue dress shirt while pumping gas near his Hollywood home.

PHOTOS: Chaz Caught With Pants Down

Chaz was on his way to the ACLU Annual Law Luncheon where he was a special guest presenter to those “individuals who have worked with us in the past year to defend our civil rights and civil liberties.”