To be high on caffeine. The equivalent to being drunk when you drink too much alcohol. Being "rushed" can be done in many ways, whether it's drinking a large amount of energy drinks, eating/snorting caffeine pills, or trying to get rushed on a simple soda.
Whether or not you should attempt to get rushed lays within how much you weigh and how well your body can absorb caffeine, much like alcohol. Attempting to do so when you're not ready can result in serious health issues, including death. So drink when you're an expert (and when you're a long-time addict), kids.
This Saint Patrick's Day, I'd like to go out and have fun just like the other adults. Unfortunately because I'm younger than twenty-one and the consumption of alcohol is illegal, I'm going to party it up and get rushed with my favorite little drug, caffeine.
Using the standard 'bases' of sexual advancement...
rushing the mound refers to "forgetting the other actions/activities defined by the 'bases' and going straight for anal sex"
This action is quite looked down upon, in fact, the result is usually immediate ejection from the field of play.
The other day, Shawn got pissed off because his girlfriend, Leebs, was not putting out. He broke up with her, found another girl from the club and rushed the mound. He got what he wanted, he got a nut, but afterwards she told him to "get the fuck out of my apartment" and promptly slapped him.
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!