Did you douch? So we can hold hand anx run thru the tulips and fa-la-la-la-la..mother fucker!
Fa-la-la-la-la...did you shave too?
Just a phrase from deck the halls
DECK THE HALLS WITH JOLLY FA LA LA LA
fa* is a shortened slang version of fack which is a different form of fuck.
F- Friendly A- Arguments
When You and a friend argue, but only using jokes
Example
A: Ihy (Name)/j
B: Ihyt lol/j BAHAHS I LOVE FA