Best definition
Yarbeque
When you want to Barbeque, but your yard looks like a jungle; so you have a yard work barbecue, a

yarbeque

“When are we going to Barbeque?”

“Sunday works for me but my yard looks like a jungle.”

“Maybe we should have a yarbeque, first.”
Yarbeque: define #2
Yarbequedrugs
When a bbq is arrange with the intent of getting people together to consume cocaine hydrochloride. No one eats much.
Barney and Faye are up for a “bbq” this weekend. meaning yarbeque