Legitimate Strategy (Tell Me Your Thoughts)
So me and a few buds did that strategy about a year ago, but figured that it would be even better nowadays.
The Strategy:
ADC/Support Mid Lane
ADC/Support Bot Lane
Supports Take Smite Summoner Spell
Top Laner is AP to account for double ADC
Level 1 ADC's get buffs, Supports Tank and use HP Pots
Make sure ADC gets exp for buff and 1 small minion, both players will be halfway to level 2.
Depending on what side of the map you are, you pick adc's accordingly to what buffs they take.
If you are Blue Side, a good team comp would look like this.
Top:
Mid:
&
Bot:
&
If you are Red Side, a good team comp would look like this.
Top:
Mid:
&
or

Bot:
&
(Just example picks)
The job for supports at level 1 is to tank the buff, smite it and let the adc take it. Then periodically after level 3 whichever one is mid should walk around clearing scuttle crabs with smite. Preferably a Thresh or Braum, since they can lower the resistances of Scuttle with CC. Which also allows for solo lane exp ADC. The mid lane support should be a roaming support. Mobi Boots Thresh or Braum or Naut or whatever. The two mid creates a lot of pressure on their solo mid laner. Also, though the enemy team has a free roaming jungler, it's very scary for him to be anywhere he can easily be caught out.
Double smite also allows more dragon control. Double supports means double sightstones, a lot of vision! Even though you lack a carry because of double supports, you actually have 2 adc's... and still AP damage from top lane and supports and even ezreal and such. The same reasons that double adc comps are good is the same for this strategy.
The two screenshotted games that are attached are games I played on my smurf. I did play some on my main but not the exact same strategy. (also I'm only allowed to attachments).
ISSUES I SEE WITH THIS STRATEGY:
Lack of 1 summoner spell (usually exhaust) creates a weaker bottom lane. Lack of actual jungler leaves counterganking a poor possibility. Supports are usually lower level than most, meaning smite is low level compared to enemy jungle (but massive vision means you'll see the steal coming from a mile away, and double smite if communicated correctly is a large burst an enemy jungle can't out-smite.).
Other than these things, I haven't seen other flaws in the strategy. Please leave constructive critisism, flaws you can think of, ideas, etc in the comments below. Add me if you are interested in trying this out! Would love to do this in ranked 5's.