I use the orange foam plugs sometimes. You have to squeeze them and kinda roll them between your fingers, then you have about 30 seconds to push them in your ear (like a Q tip). They expand back to their normal shape and work very well, but yeah, you cannot just push them in your ears.
They really squash the engine noise and some of the wind on my bike (I have stock exhaust). I have noticed at 60mph I cannot hear my own MC horn with the ear plugs, but I can (just barely) at 40. It makes the ride quieter and less exhausting but I keep in mind that Im nearly deaf with them in my ears.