--Verb (present progressive)--
The act of taking contemporary photos (digital or scanned film) and tweaking them with post-processing to appear old, aged, vintage or antique.
Adherents to this practice: "antweakers"
May also spelled: antwiquing.
"Dude, I didn't know iPods were around in the 1890s!"
"Bro, they probably weren't. Like, dig the texture and the siiiick gaussian blur along the trim. Somebody's been antweaking that shit."