The act of taking 2 recreational pills (Es) at once. The first pill is put into the mouth and ingested orally, the second pill will be shelved (inserted into rectum). both pills must enter simultaneously.
Person one: Oh Shit, That Staunch Cunt Deeno's Fucked....
Person two: Yeah man He's been LA Tunnel Running....
Person two: Yeah man He's been LA Tunnel Running....
by STCSTC May 9, 2016
Get the LA Tunnel Running mug.