Rectumsempra 

A spell that can accidentally be used when the spell-caster means to use "Rictusempra" (the tickling charm). This spell will cause the target to suffer from sudden, frequent, and uncontrollable bowel movements.

Kira pointed her want at Jake - with the intention of using the tickle charm on him. She mispronounced the incantation and said "RECTUMSEMPRA!!"

Jake quickly rushed to the washroom.

Rectumsempra by NevilleLongbottom12321 November 20, 2010

rectumsempra 

a magical spell when you tickle the asshole a little bit

I used the spell rectumsempra

rectumsempra by eugenesaunders December 10, 2020

Sectumsempra

A spell in the Harry Potter series that cuts the target several times like a sword. It was invented by Severus Snape and chronicled in his annotated Potions schoolbook, where Harry Potter learned it. The cuts can only be healed immediately after infliction by a countercurse also created by Severus Snape.

The spell is ineffective on Inferi or other creatures who do not have or need blood.

The name derives from the Latin sectum, "cut", and semper, "always"

Harry Potter dropped Draco Malfoy like a convulsing brick by slashing him with the effects of Sectumsempra.

Sectumsempra by LaserPhaser May 22, 2010

sectumsempra

The most awesome spell in the Harry Potter series, causes violent cuts to the victim. First used on Draco Malfoy in Harry Potter and the Half-blood Prince.

I cast "SECTUMSEMPRA!!!" on you.

sectumsempra by Snowmanjew666 August 7, 2005