Usain bolt is considered the fastest man in the world. When you get so excited you feel like you could outrun him, you're going usain

When you eat dirt for the first time and leave your family to build a shack in the woods

Whenever anything outclasses its rivals beyond description it will be known to have been Usained.

Past tense: When anything has crushed its competition then it is said ‘to have Usained'

Present Tense: If anything is currently smashing its opposition it is 'Usaining it'

Future Tense:
Similarly if something is without a doubt going to outshine its opposition it will 'Usain it'.

adj. Quick, quick witted, or first in any contest or pursuit, intellectual or otherwise. Often used by skateboarders in an ironic sense.

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'usain' should be used when describing something crazy/out of this world occurs