Because if you only invite one, he'll drink all your beer.
Invite two of them.
Because if you only bring one, he'll drink all your beer.
Because usually they're stuck with reservations.
A barrel organ.
A Hebrew.
Because if you just take one, he'll drink all your beer.
A Methodist will say "hi" to you at the liquor store
If you take one, he'll drink all of your beer, If you take 2 neither will drink a drop