noun
1. When a man is flirting with a woman. Another man sees that they are flirting and begins flirting with that women, exclusively to the first man. This prevents the first man from getting sex with the woman.
2. A man who is trying to prevent another man from getting sex. He does this by flirting with the girl the original man planned on having sex with.
1. I was real close to getting her in bed, until Johnny walked in and turned it into a real twotblocker.
2. That chick had a thing for me, until the twotblocker started talking to her.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."