1. Never give them your real name.
a few of Larry's aliases - Englebert, Reginald, Robert Newman, Paul Redford, and Jack Tripper.

2. Always tell the girls you work at a job that will impress them.
A few of the occupations Larry tells girls he has: dentist, doctor, talent scout for MGM, flight attendant, diamond cutter from Amsterdam, chef, and even said he was a monk to a girl in convent school!!!

3. To impress them give them irreplaceable family heirlooms -
he keeps a large supply of his mother's wedding rings.

4. Never tell them the truth.
He reasons that anyone who gets up half an hour early to put on plastic finger nails, false eyelashes, and a coat of make-up isn't someone who wants to hear the truth.

5. Directness is the only way to go.
For example, because it is difficult to get an intelligent woman out of her clothes you may want to spill wine on her dress.

There it is, 5 easy steps to become a swinging stud like Larry Dallas.
Please, use these rules for good, not evil! ;)
(This info was from the link Three's Company Lives)

Very funny, I especially like #4. I remember hearing that.