Shelving is generally done with pills for its high absorption rate, but causes serve anal irritation and can lead to further problems such as shitting bricks if a hallucinogen is taken.
Mate, I just shelved some acid, I feel like a elephant cock is stuck up there.
2. To accidently(or intensionally) forget about an engagement that you should've have attended.
"Damn! I was supposed to go to that interpol show last night but I had to shelve it because trish was going also."