Write something weird!
"Weird" is a completely subjective term. The idea here is to not take yourself too seriously - an important aspect of being a good musician! "Weird" here could mean a chord progression that doesn't quite make sense or has a wonky chord in there. It could mean a melody that meanders too much or jumps around a wide range. It could be a meter that switches from 3/4 to 4/4 or from 5/4 to 3/4. It could be a weird guitar tone that makes you laugh because it doesn't feel like a guitar. It could be a composition where you just leave too much space, then jam too much stuff into another area.
One of the advantages of exploring deliberately weird things, is that you quite often stumble upon things that end up being kind of cool! If you accidentally stumble upon something cool, you are absolutely welcome to share that too!