Drug dealer's have a code over the phone, so that any police tapping the line will be unable to get sufficient evidence on you.
IE.
Don't say 'crack' or '
weed' over the phone.
Dont use dollar amounts or grams. ie 'two hundred bucks' or
7 grams.
Use fake names or if possible, no names at all.
Don't say the exact meeting place.
Don't sound like your shopping. ie 'Can I get a....'