a full sprint while swimming over large distances. Named for the build up of lactic acid in your muscles. Will, quote, "make your penis hurt"
by sean smith December 15, 2012
 Get the lactatesmug.
Get the lactatesmug. When someone has a dry t-shirt except for two wet spots right at the breasts.  
i.e. Would you look at that, Tom is starting to lactate.
i.e. Jesus Christ it's hot out here, I'm lactating already.
i.e. Would you look at that, Tom is starting to lactate.
i.e. Jesus Christ it's hot out here, I'm lactating already.
by ILIR September 9, 2008
 Get the Lactatemug.
Get the Lactatemug. by Asstittyballz December 7, 2015
 Get the lactatingmug.
Get the lactatingmug. At first we didn't know what was wrong with Linda, but we soon found out she was a Lactating Savage.
by Viking Guy May 15, 2007
 Get the Lactating Savagemug.
Get the Lactating Savagemug. one who interjects randomly, interrupting someone in a conversation, like a cow who is full of milk and lactates spontaneously.
Thomas: Bro. you won't believe what happened to me last night, I was driving home and....
Gilbert: Yo you wanna hear a dead baby joke.
Thomas: Stfu and let me talk don't be a fucking lactating cow.
Gilbert: Yo you wanna hear a dead baby joke.
Thomas: Stfu and let me talk don't be a fucking lactating cow.
by D3RTYS4NCH3Z August 27, 2008
 Get the Lactating Cowmug.
Get the Lactating Cowmug. We took it personally.
Lactation Lettuce was denied on Urban Dictionary, and we, lactationlettucelickinglover420, will not stand to let it be denied a second time!!!!
by Lactationlettucelovinlicker420 February 8, 2019
 Get the Lactation Lettucemug.
Get the Lactation Lettucemug. 