sack up
v.— «See Joe that’s the difference between a true smacker like me and a wannabe like you—i have the balls to jump into the fire instead of letting it fizzle to a spark before stomping on it. When you learn this and sack up maybe, just maybe you’ll get some respect fr your mediocre smack talent.» —“Re: You Should Not ASSUme ANYTHING” by skyboyuz@aol.com VanSmack (SkyBoy UZ) Usenet: alt.sport.lasertag Dec. 2, 1998. (source: Double-Tongued Dictionary)