Friendalanche 

the situation arising from a desire to invite one friend to an event which results in a social obligation to invite a large number of additional friends to said event

Inviting Smiley Sue means you have to invite Laughing Lisa, which then leads to inviting Debbie Downer. And if you invite Debbie Downer, you need to invite Smelly Steve. And so on and so on....

Example: "I would love to invite you to my party, Smiley Sue, but doing so would inevitably lead to a friendalanche."

Friendalanche by MilPhilDil July 1, 2011

Friendalanche 

The online phenomenon which can be witnessed on popular sites like Facebook where you reach a point when you accept friends you don't know and then their friends decide to friend request you and then their friends and ....

Death Dealer 666 — Today at 6:05 PM
Hey you all, friend me on FB, let me know you know me and I will accept. I made too many friends for my FB account and I think it caused a Friendalanche thus making it hard to determine who I do or do not know anymore. My game account is Death Dealer 666 for facebook.

Friendalanche by Death Sealer 666 May 28, 2021