Whip its

[Sarah]

sucking the air out a whipped cream can to get a high feeling.

[Little_Girl]

A whip it, normally called a [whipped cream charger], is a polished silver canister about 2 inches in length containing .8 or .16 mg of nitrous oxide.
When cracking sealed whip its, you will need a [whipped cream dispenser] or separate cracker (normally with a large non inflated balloon attached around its dispenser valve).
After a series of long, deep breaths the whip it is then inhaled through either the filled dispenser or balloon at which point the user will then hold their breath.
The desired effect happens almost immediately and is composed of a series of short [hallucinations] and distorted hearing. The user will then slowly breath out the remaining n2o and repeatedly inhale oxygen until the effect wears off.
This abuse of [nitrous oxide] puts it on the Hazardous Chemicals database due to sometimes causing asphyxiation.