After Sebastian and Finbar got gunged in last week's episode their Dad Mark, tell their brothers to Martin and Jonjo to go and do their homework. Mark then leaves. But instead of doing their homework, Martin and Jonjo point and gloat at the 2 gunged boys for about 30 seconds, and then one of them gets their phone out and they take several actual real selfie photos with them doing gloating or taunting poses in front of the gunged boys.

Whilst they are taking the final photo, Mark returns. He isn't angry but he realises he has an excuse for more gungings.

He says "Boys. I told you to do your homework. Instead you disobeyed me and are still taunting Sebastian and Finbar. For disobeying me... you deserve a gunging!

Finbar and Sebastian look and act excited about this. Martin and Jonjo beg but they are told to swap places with Finbar and Sebastian. Martin and Jonjo sit in the chairs, they admire each other's feet and talk about how nice their feet look.

Then they takes off each other's shoes and each other's socks. Then they start footplay. After some footplay between the two boys, Mark, Finbar and Sebastian tickle the 2 brothers' barefoot (soles) while they are cross footed. Then it's slime time! Mark is slowly pouring slime. on the heads of Martin and Jonjo like usual. The other 2 boys are chanting "Slime them, Slime them," and pointing and laughing.

After Mark has poured 3 jugs of slime on each of the 2 brothers (6 jugs), he then says to Sebastian and Finbar "Would you like some revenge? " and they say "Yes please"

So Mark then offers Sebastian the chance to pour a jug of slime onto Martin. Sebastian is delighted and grateful and appreciates it so much, and he pours the slime over Martin's head. Then Mark offers Finbar the chance to pour a jug of slime over Jonjo. Finbar is delighted and grateful and appreciates it so much, and he pours the slime over Jonjo's head. Mark then says "Oh I love to use any excuse to gunge people it's so funny." He high-fives with Sebastian and Finbar.