The act of emailing friends from a mobile device while defecating, usually from the individual's office bathroom. The term is derived from the common practice engaged in by busy young professionals who only have opportunity to email their friends during their time using the restroom.
"Man, Tyler's email had a lot of typos. Must have been a Weekday Adam (WDA)."
"Hey guys, sorry, but I need to leave this meeting a little early. I'll knock out a Weekday Adam (WDA) to some dudes I went to college with and circle back with all of you later."
"Hey Paul and Steve, I had Mexican food last night for dinner, so get ready for a really long Weekday Adam (WDA) about my weekend."