look up any word, like dirty sanchez:
 
1.
A person who has the aids virus
yo, did you see that guy, looks like he's on the A train
by jack the wack May 07, 2008
 
2.
The feeling of being able to accomplish anything while on adderall; often associated with a ten fold increase in productivity.
A: Hey man are you okay? What'd you do all day, didn't hear from you at all.

B: Yeah, I'm fine, just took a ride on the A train. Cleaned my room top to bottom, alphabetized my DVD's, and got all of my laundry done. AND finished that paper I put off for 2 weeks.
by ringtab November 05, 2010
 
3.
To be dominant. Sexy, confident, full of swag.
"Give me the ball, I'm about to go A-Train"
by kevinache October 13, 2011
 
4.
A New York City subway train (the Eighth Avenue Express) mentioned in Duke Ellington's signature song "Take the A Train" and famously performed by Ella Fitzgerald. The A Train passes through Harlem, stopping at 145th Street ("Sugar Hill"), a center of African American culture during the "Harlem Renaissance" between the world wars.
You must take the A Train / To go to Sugar Hill way up in Harlem / If you miss the A Train / You'll find you've missed the quickest way to Harlem ...

"Take the A Train"
Billy Strayhorn
by JerseyJohn February 01, 2007
 
5.
On some college campuses taking Adderall is known as "taking the A train"

Adderall is used to help students concentrate and reduces their appetite
It's finals, everyone is riding the A-train right now
by Race04 December 06, 2010
 
6.
Tripping on acid (LSD).
He's riding the A-Train and won't be back for a couple of hours
by John Thomas October 24, 2003
 
7.
Double team that includes two people who are both named Alex. Known for its excellent sexual stimulation
Us Alex's gave that biatch the A-Train
by someguy April 02, 2005