Example 4: The Ultimate Guide to Crashing a Friend's BBQ

Step 1: Show up uninvited, but make it look intentional.

http://www.example.com/subpages/PartyCrashers/PartyCrashersManual

Step 2: Bring a mediocre gift, like a bottle of cheap champagne and a slightly-used tie.

Step 3: Compliment their lawn, but make sure it's something that's already obvious, like "Nice lawn."

Step 4: Ask to help with setup, but really just take a drink and sit down.

Step 5: Repeat steps 3 and 4 until the host is too polite to ask you to leave.

Additional Tips:

Don't forget to bring your own snacks, or you'll be stuck eating that weird coleslaw.
When the host asks you to leave, pretend like you're just going to the bathroom.