To ejaculate semen in your partner's mouth, then you sit on their stomach, causing them to blow the semen in the air, much like Shamu the whale
My girlfriend was giving me a B.J. as I came, I jumped on her stomach. She looked like Shamu the Whale.
by daentourage June 28, 2009
Get the Shamumug. by king of shamus@shamucompetitions.com July 29, 2008
Get the shamumug. Kelly: omg i just ate and i'm wearing a bathing suit
Lauren: omg you're totally shamuing right now
Brooklynn: omg me too
Lauren: omg you're totally shamuing right now
Brooklynn: omg me too
by kellauynn March 17, 2010
Get the Shamumug. A girl who is at first sight cute, but at a closer look, she turns out to be ugly. She is friendly, but has a voice that will make you want to kill yourself, hence the fact that the whale Shamu squeaks. She is not a terrible person to be around, but gets jealous very quick if you ditch her for her hot friend. She is easy to get pissed off and is a slut to guys that she would only go out with just to get them to like her. At parties she will throw herself at guys, and pretends to be drunk so she can cover up how easy she is to get. Mainly found in high schools all around America.
Person 1: "Bro, look at that girl, shes hot!"
Person 2: "Are you kidding, shes ugly!"
Person 1: "Dammit, its just another Shamu."
Person A: "Yo, Amy told me she wants to hook up with me at the party on friday"
Person B: "Are you kidding! She told me that she didn't want to hook up with anyone! What a fucking Shamu!"
Person 2: "Are you kidding, shes ugly!"
Person 1: "Dammit, its just another Shamu."
Person A: "Yo, Amy told me she wants to hook up with me at the party on friday"
Person B: "Are you kidding! She told me that she didn't want to hook up with anyone! What a fucking Shamu!"
by Scal7 January 26, 2012
Get the Shamumug. a man who is extremely athletic person who has a large cock and who is cooler than most people see felix has fucked his dick raw many atime dont bring your girl around him.
by fuckfelix6969 March 29, 2011
Get the shamusmug. by robloxlover69/420 October 26, 2020
Get the shamusmug. When you blow into a bong cause water to shoot out of the bowl peice. This stream of water looks like when Shamu shoots out water.
by dawg1774 May 3, 2017
Get the Shamumug.