When you're shagging a chick, you say "I have aids" and try and see how long you can stay inside her.
David was shagging Lucy, he decided to have some spanishrodeo fun, he yelled "I HAVE AIDS" and managed to fuck her for 5 seconds before she bucked him off.
When your rooting a chickdoggy style and then whisper in her ear " this is how i done your sister!" and then see how long you can stay on before you get the crap beaten out of you.
People try to do the "Rodeo" with Paris Hilton but she doesnt give a sh*t.
when, in the course of doin a girl from behind, one gently leans into the girl's ear, and whispers something to the effect of "I have STDs" and henceforth attemps to remain inside the aforementioned girl for eight (8) seconds.
"dude....did you rodeoride that biatch last night............................ I would have......................she was a hoooooooooooo"