Fence Hopper (poker)
Someone who comes in cold to a pot, that is, someone who has
not yet had the opportunity to call any bets and, when a pot
has already been raised, calls the initial bet plus the raise.
For example, you open the pot in a limit game. I make it two
bets, that is, I raise. Now the action comes around to the player
to the right of the dealer,
who calls the two bets. Also called hitchhiker.