1. (US campus) crazy.
|Campus Sl. Oct. 9: shell – crazy, disturbed. Can be used either affectionately or seriously.|
|Campus Sl. Apr. 4: go shell – feel very uneasy, nervous, agitated: ‘I nearly went shell having to spend an entire summer with my parents’.|
|Campus Sl. Spring.|
2. (US campus) bad, second-rate.
|Campus Sl. Nov. 5: shell – surprising, astonishing, unexpected, rude, inconsiderate: ‘I can’t believe she went out with him, knowing he just broke up with her best friend—that is so shell!’.|
|Campus Sl. Apr. 5: shell – in poor taste, raunchy: ‘That movie was shell’.|