Definition of "hop on" []

• Get up on the back of (verb)

WordNet. Princeton University. 2010.

• "You hop on the treadmill, jump on the bike, or step on the elliptical trainer; then you turn on the TV or pop in the earphones of your iPod or flip through the trifecta of required reading People, Us Weekly, and In Touch, and off you go … to nowhere fast."
• "On his fifteenth FCLP hop on August 10, Armstrong was deemed “Field Qualified.”"
• "Little Xue, padded from head to toe in the pink snowsuit, would hop on the bicycle for the long, cold ride to the indoor rink."