Bug Attack!!

It was 07:43pm, I was chilling infront of my computer, when suddenly a "UFO" came into my sight.
"Ah, just another bug.."I thought.
Seconds after, it multiplied.
2,4,6,8,10...
"Hmm...WTH?"..I began to direct my attention to these ever increasing "UFO"s..
And till a point..I was surrounded by this swarm of bugs..
"OMG! Get lost!"I shouted.
This is what happened; due to some unknown reason, a swarm of bug..flew out of the blue and rushed into my room!
Their number quickly reached an alerting stage.
"We shall strike back!"I said as I pulled out my "Anti-UFO"-electric bat.
"DIE! DIE you annoying brat!"I swing feverishly at these "UFO"s.
After a tough battle and countless sparks flying around, I won.
When I came to my normal senses, I realise the mess I have left..
This is what it looked like on the floor.

A closer view at the "UFO"s~! I swept'em together~ Disgusting eh?

Their graves ofcourse, would be my toliet bowl~but the picture is abit too disgusting to appear here~So yea~:D
We took no casualties~but..why were they here? What message were they trying to send?
Makes Me Wonder.