Mel Gibson -- It's NOT a Purse!

7/27/2010 8:00 PM PDT BY TMZ STAFF
With a baseball cap slung low on his head, Mel Gibson was spotted in Santa Monica yesterday ... carrying a man purse satchel.

0910_media_removed_Mel_Gibson

It's the second time Mel's been spotted out in two days ... following an entire month in seclusion.

Other celebrity satchel wearers include Indiana Jones, Joy Behar ...