How about these...
Guy on quad...... "Look Ma, no hands!"
Guy on ground... "look Ma, no brains!"
"Guess who lost that bet"
"MENSA members"
Guy on ground... "Are you sure this is how Baxter gets ready for a race?"
"I told you he could sleep anywhere at any time"
"Not exactly what he had in mind when she said she wanted to be on top once in a while"
"Well, how do you think I became known as roadkill?"
(kinda surprised that someone else didn't make the connection like that)
roadkill