Snickering

[Luis Fok]

To [scratch] one’s butthole with all fingers, including the [thumb] and [pinky]

[Monty]

Laughing in a half-suppressed, typically scornful way; sniggering.

[Luis Fok]

The act of [eating] [ones] [ass].

[Justin Bieber]

To [keep going] on and on and on about [something].

[Justin Bieber]

[Snickering]. The art of freezing a turd and [upping] yourself with it. Male or female. Make sure the [snickering] is completed before the turd thaws.
andrew [snickered] himself with his own muck

[Rihanna]

present participle of snicker