The painful slap in the face one receives when they lean too far over the subway track to see if the train is coming. The subway comes... and they are slapped in the face by the train. Not hard enough to knock off their head, but just hard enough for it to be considered a Train Slap.
Me: " You better step away from the tracks, Katie, you're in for a painful train slap."
Katie: " I've been train slapped before, and I won't let it happen again"
Katie: " I've been train slapped before, and I won't let it happen again"
by met21 August 16, 2011

The mimed, or more often real, slap to the hiney of someone else during some kind of from-behind sex. Also can just be any smack to the hiney.
He mimed booty-slaps like everyone else, but he was like too nice a person to have actually done that.
by Ninja Clan Lord December 30, 2016

The act of one being a douche bag by slapping your or another's lower back. By far this is one of the worst pains one can experience. To execute correctly one must....
1. Sneak up on a person
2. Locate there lower back ( right above their ass crack )
3. Slap vigorously to piss off the "slap"ie
Note: most effect when aiming for the fat deposits located near the love handle area.
1. Sneak up on a person
2. Locate there lower back ( right above their ass crack )
3. Slap vigorously to piss off the "slap"ie
Note: most effect when aiming for the fat deposits located near the love handle area.
- Yo did you see how pissed off JJ got when I Jman slapped him?
- Yea, your a douche bag.
- The Jman slap is so sick and should be spread around so I get famous.
- That would be cool, but your still a douche bag.
- Yea, your a douche bag.
- The Jman slap is so sick and should be spread around so I get famous.
- That would be cool, but your still a douche bag.
by Jman5670 June 24, 2011

by Lane Briggs April 8, 2013

The act of using one's hand to slap the hair on another's head. Often used when someone has asked you a difficult question that you do not want to answer.
by Space Boobies April 22, 2010

by Shylo Sasakamoose April 13, 2008

by J,A,H October 8, 2009
