A run-on-sentence is similar to any other standard sentence except just goes on and on and on indefinitely without actually telling you anything important beyond the first clause because a run-on-sentence is actually an ongoing series of clauses that should really be separated out into their own distinct sentences but aren't due to carelessness or hyperactivity observed most frequently in college students finishing last-minute essays or by those who have consumed far beyond the daily recommended dose of coffee, amphetamines, or snickers bars.
Run-on-Sentence seen above.
A sentence that goes on for too long without proper punctuation.
This is an example of a run-on sentence: First I went to my friends house and then we played games for a while then we got something to eat and afterward we jumped on the bed for a while before going to sleep after midnight.
Pregnancy scare. A missed period.
My girl scared me last month with her run on sentence, but thankfully she punctuated