This month let's take a look at the word ahead. In the cartoon go on a head means put on, but this what we can mean by ahead:
- in a forward direction: "Go ahead"; "The boat moved ahead slowly"; "The train lurched ahead".
- at or in the front: "I see the lights of a city ahead"; "The road ahead is wet"; "Staring straight ahead".
- toward the future; forward in time: "Look ahead and think about what may happen in the future".
- ahead of time; in anticipation: "If you pay ahead (or in advance) you receive a discount"; "She likes to plan ahead".
- to a more advanced or advantageous position: "A young woman sure to get ahead"; "Pushing employees ahead"
- to a different or a more advanced time (meaning advanced either toward the present or toward the future): "Moved the appointment ahead from Tuesday to Monday"; "Pushed the deadline ahead from Tuesday to Wednesday"
- leading in a competition: "The horse was two lengths ahead going into the home stretch"; "Ahead by two goals".
Link: Phrasal Verb 'Hit On'