B: The only time he "rises higher" is during his daily 4:20 appointment with Senator Blunt.
Mitch starts each day with a wake and bake at 7, and by 8 he is ready to deliver another lecture about the intricacies of star clusters and planetary orbits. He has broken the grass ceiling.
Also a phenomenon evidenced when a really decent program (e.g., college football) can not seem to make the transition to a national and/or perennial powerhouse due to self-imposed barriers. Virginia Tech, for example, fails each year to be considered in the same category as USC, Texas, and Oklahoma, teams that have won many national championships. The barrier is a failure to acknowledge and resolve internal staff issues (primarily, the offensive coordinator) which leads to a general perception by the players that they can't play at the Tier 1 level. In this case, the coaching staff has created a "grass ceiling" through which the players can not progress.