Legality
In the United States, under the Federal Drug Paraphernalia Statute, which is part of the Controlled Substances Act, it is illegal to sell, transport through the mail, transport across state lines, import, or export drug paraphernalia.
In countries where marijuana and hashish are illegal, some retailers specify that bongs are intended for use with tobacco in an attempt to circumvent laws against selling drug paraphernalia. While technically 'bong' does not mean a device used for smoking mainly marijuana, drug-related connotations have been formed with the word itself (partly due to punning with Sanskrit bhangah "hemp"). Thus for fear of the law many head shops will not serve customers who use the word "bong" or "bongs", or any other word typically associated with illegal drug use.
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