...you need caulk. The bigger the crack, the more caulk you need. You hold the gun at an angle and squeeze steadily, moving down. Make sure your finger is wet, the caulk needs it wet, 'cause you don't want it to get hard too fast, then get your finger in there and smooth it down..."
Part of the down-and-dirty caulk tutorial I received from our contractor.
Is it hot in here, or is it just me?