Like "just the tip", this game would be reccommended by a male wishing to have sexual intercourse with a female. The difference comes along in hoping the female will confuse the two games and gives the male permission to insert his entire penis to "just the base".
lacrosse guy: lacrosse is the best sport, baseballs for pussies
baseball guy: no baseball kicks so much ass, lacrosse is gay
lacrosse guy: YOURE GAY
baseball guy: NO YOURE GAY
(fag urbandictionary is making me say lacrosse vs. baseball in the example so lacrosse vs. baseball there you go)